<h4>1 - What is fitness for purpose?&nbsp;</h4>The test meets the necessary performance criteria for a clinical binary examination to ensure it is suitable for making accurate and reliable clinical decisions in the intended patient population. Among others, performance criteria include clinical sensitivity and clinical specificity.&nbsp;<h4>2 - How to assess clinical performance?&nbsp;</h4>Assessing the clinical performance of a binary examination, stating results as 'positive' or 'negative,' involves calculating the examination's Clinical Sensitivity and Clinical Specificity. From the physician's point of view, clinical performance is evaluated by using predictive values, i.e., how likely is it that a positive or negative result corresponds to the presence or absence of the condition, which is also influenced by the prevalence of the condition in the population being tested.&nbsp;<h4>3 - What is Clinical Sensitivity?&nbsp;</h4>Clinical sensitivity (SS), also known as the True Positive Rate, measures the proportion of true positives correctly identified by the test. Data from a group of subjects who have been confirmed to have the disease or condition through diagnosis or a gold standard test (D1 in Table 1) are needed to calculate clinical sensitivity.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Eurachem_Table_1_2x2_Contingency_table_for_clinical_diagnosis_241735a171.jpg" alt="Eurachem: Table 1. 2x2 Contingency table for clinical diagnosis." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Eurachem_Table_1_2x2_Contingency_table_for_clinical_diagnosis_241735a171.jpg 245w," sizes="100vw" width="1401" height="461">The formula for clinical sensitivity is:&nbsp;SS = tp / (tp + fn), with:&nbsp;<ul><li>tp, True Positives are the cases where the test correctly identifies the presence of the disease.&nbsp;</li><li>fn, False Negatives are the cases where the test incorrectly identifies the absence of the disease when it is actually present.&nbsp;</li></ul>Table 1 represents the components of clinical sensitivity and specificity. Figure 1 illustrates an example of the overlapping of the number of components. The symbol "∩" represents the intersection of groups. For example, D1∩n denotes the set of negative results obtained for known positive cases, i.e., false negatives.<h4>4 - What is Clinical Specificity?&nbsp;</h4>Clinical Specificity (SP), also known as the True Negative Rate, measures the proportion of true negatives correctly identified by the test. Data from a group of subjects who have been confirmed not to have the disease or condition through a gold standard test (D0 in Table 1) are needed to calculate clinical specificity.The formula for clinical specificity is:&nbsp;SP = tn / (tn + fp), where:&nbsp;<ul><li>tn, True Negatives are the cases where the test correctly identifies the absence of the disease.&nbsp;</li><li>fp, False Positives are the cases where the test incorrectly identifies the presence of the disease when it is actually absent.&nbsp;</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Eurachem_Figure_1_Graphical_representation_of_an_example_of_85ab82a16b.jpg" alt="Eurachem: Figure 1. Graphical representation of an example of tp (D1∩p), tn (D0∩n), fn (D1∩n), and fp (D0∩p). " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Eurachem_Figure_1_Graphical_representation_of_an_example_of_85ab82a16b.jpg 245w," sizes="100vw" width="1300" height="736"><h4>5 - How to calculate the uncertainty of clinical sensitivity and specificity?</h4>Calculating clinical sensitivity and specificity uncertainty involves statistical methods that estimate each parameter's confidence interval (CI). These intervals provide a range of values within which the true sensitivity or specificity is expected to lie with a certain level of confidence, typically 95 %. Please refer to the AQA:2021 for information about statistical models to compute the 95 % CI [1].<h4>6 - How to define targets?&nbsp;</h4>Target minimum values for clinical sensitivity and specificity should be identified. These values may originate from regulations or criteria based on the intended use of the binary results. A target or minimum value for the lower limit of the 95 % CI for result rate, i.e., SS or SP, (LLSS.95 or LLSP.95) or the upper limit of the 95 % CI for result rate (HLSS.95 or HLSS.95) should also be defined according to the purpose of the analysis. The target or minimum value (LLSStg or LLSPtg) is particularly significant when the impact of false results is critical. For example, for blood components used in transfusions, the screening for infectious diseases should be performed with tests associated with an LLSS.95 close to 100 %.&nbsp;Figure 2 illustrates five different tests, each assessed for clinical sensitivity and its associated uncertainty. These cases reflect different levels of compliance with a target sensitivity of 0.5. Case 1 is non-compliant, Cases 2 to 4 are partially compliant, and Case 5 is compliant. From a simplified statistical power view, the laboratory should always take into account the minimum number of samples when defining its target. This number can be estimated by simulation. For example, for a clinical sensitivity of 90 % the evaluation will require a minimum of 10 samples. It should be emphasized that samples must be representative of the target population for a clinical power evaluation - for example, epidemiologically representative samples of the types and subtypes of a given virological agent are required.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Eurachem_Figure_2_Compliance_assessment_with_clinical_sensitivity_a21ece043c.jpg" alt="Eurachem: Figure 2. Compliance assessment with clinical sensitivity uncertainty using the lower 95% confidence interval limit for five performance assessment scenarios. " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Eurachem_Figure_2_Compliance_assessment_with_clinical_sensitivity_a21ece043c.jpg 245w," sizes="100vw" width="1500" height="648">

Performance Assessment of Binary Output Examinations in Medical Laboratories

🎤 Presenter: Wenjing Ma (University of Washington)💾 <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/paper/32777">PDF presentation</a><h3>Abstract</h3>Pseudomonas aeruginosa and Aspergillus fumigatus are major pathogens found in the lungs of Cystic fibrosis patients. Their coexistence worsens lung function and leads to poor clinical outcomes. To investigate their metabolic interactions, we analyzed the volatile space of P. aeruginosa and A. fumigatus using <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?instrumentationItems=2-3-13-7">SPME-GC×GC-TOFMS</a> across four sample classes: Media, P. aeruginosa monoculture, A. fumigatus monoculture, and their co-culture. GC×GC-TOFMS provides high-resolution, high-sensitivity separation of complex metabolomic samples, but it also generates high-dimensional data that can be challenging to analyze.&nbsp;Therefore, feature selection and chemometric methods are essential to extract meaningful information. Additionally, peak table alignment issues due to retention time shifting across samples can in principle hinder the comparative analysis of multiple samples. Hence, we applied tile-based Fisher-ratio analysis using ChromaTOF Tile software to discover analytes that are statistically significant in concentration differences across samples with replicates while minimizing retention-time shifts. This platform generates a comprehensive hit list that links detected analytes across all samples. In summary, our study integrated tile-based analysis to generate a comprehensive peak table that relates all analytes in all samples in terms of up and down regulation of their concentrations. With further analyte identification, we have characterized analytes specific to each sample class to ultimately learn more about Pseudomonas aeruginosa and Aspergillus fumigatus pathogens and their co-culture.<h3>Video Transcription</h3>In this study, Wenjing Ma from the University of Washington presents a data-driven approach for analyzing complex GC×GC–MS datasets, with a focus on volatile metabolites produced by clinically relevant microorganisms. The research centers on the interaction between Pseudomonas aeruginosa and Aspergillus fumigatus, two pathogens commonly found in the lungs of cystic fibrosis patients. Their co-existence is known to correlate with worse clinical outcomes, making the understanding of their metabolic interplay particularly important.The main objective of the work is to identify metabolites that differ significantly between monocultures and co-cultures, thereby revealing biochemical interactions that may influence disease progression.<h4>Experimental Approach</h4>The experimental design includes four distinct sample classes: a media control, monocultures of Pseudomonas aeruginosa and Aspergillus fumigatus, and their co-culture. Samples were prepared using a microfluidic platform and analyzed via headspace sampling, enabling the capture of volatile compounds released during growth.To characterize these samples, comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (<a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/37">GC×GC–TOF-MS</a>) was employed. This technique provides high acquisition speed and full mass spectral information, allowing detailed chemical characterization. However, it also generates extremely complex datasets. A single chromatogram may contain up to a million data points, and when multiple samples are considered, the data effectively become four-dimensional. Such complexity makes direct manual interpretation impractical.<h4>Data Processing Strategy</h4>Traditional approaches to data reduction, such as generating peak tables or averaging chromatograms, present significant limitations. Peak alignment can be compromised by retention time shifts, while averaging can reduce resolution through peak broadening. To overcome these issues, the study applies a tile-based feature selection strategy built on statistical analysis.The chromatographic space is divided into small regions, referred to as tiles, and each tile is evaluated using a statistical metric that compares variability between sample classes to variability within classes. This approach allows the identification of features that show the greatest differences across experimental conditions. Importantly, the method is extended to two-dimensional chromatographic data and applied across individual mass channels, enabling a highly detailed and systematic analysis.The workflow is implemented using <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/348">Chromatof Tile software</a>, which produces ranked lists of statistically significant features and supports visualization tools such as principal component analysis (PCA) plots for confirming class separation.<h4>Results and Interpretation</h4>Initial inspection of raw chromatograms reveals that while the media control exhibits relatively low signal intensity, the biological samples show highly complex and overlapping patterns. Differences between monocultures and co-cultures are not readily apparent without advanced data processing.Using tile-based analysis, hundreds of statistically significant features were identified. These features provide insight into metabolic behavior. For example, compounds that are abundant in the media but reduced in biological samples are likely being consumed by the organisms. Conversely, compounds that are elevated in specific cultures may represent metabolites produced by one organism or influenced by microbial interaction.The reproducibility of the experimental setup is supported by consistent signal patterns across replicates, indicating reliable sample preparation and data acquisition.<h4>Statistical Evaluation</h4>To further refine the interpretation, pairwise statistical comparisons were performed between all sample classes. This enables identification of specific differences between monocultures and co-cultures, highlighting which metabolites are associated with individual organisms and which are affected by their interaction.The results suggest that certain metabolites are dominant in Pseudomonas aeruginosa monocultures but are altered in co-culture conditions, indicating potential biological competition or suppression mechanisms.<h4>Alternative Approach for Limited Data</h4>Recognizing that biological replicates are not always available in practice, the study also explores an alternative strategy based on the coefficient of variation (CV). This method allows meaningful analysis even when only a single replicate per condition is available, making it particularly valuable for high-throughput or resource-limited experiments.By applying this approach, the researchers were able to identify metabolites showing significant changes across conditions, including compounds uniquely produced or suppressed in specific cultures. One example includes the identification of 1-octen-3-ol, a known fungal metabolite, which serves as validation of the analytical workflow.<h4>Discussion</h4>A key outcome of this work is the demonstration that the choice of statistical method must be aligned with the experimental design. When sufficient replicates are available, variance-based methods provide robust results. In contrast, when data are limited, alternative metrics such as the coefficient of variation offer a practical solution. Additional approaches, such as fold-change analysis, can further enhance interpretation by focusing on relative differences between conditions.The tile-based framework proves particularly effective for handling the complexity of GC×GC–MS data, enabling the extraction of meaningful biological information without compromising resolution.<h4>Conclusion</h4>This study highlights the power of advanced data processing strategies in modern analytical chemistry. Tile-based statistical analysis enables the systematic exploration of highly complex datasets and provides valuable insights into microbial metabolism and interaction. The approach is flexible, scalable, and adaptable to different experimental constraints, making it a strong candidate for broader application in metabolomics and environmental analysis.<h4>Future Perspectives</h4>Future work will focus on integrating chemometric tools to improve compound identification and expanding the analytical framework to support more comprehensive, multi-method data analysis.<blockquote>This text has been automatically transcribed from a video presentation using AI technology. It may contain inaccuracies and is not guaranteed to be 100% correct.</blockquote>

Implementing Tile-Based Fisher Ratio Analysis of GC×GC-TOFMS Data to Obtain a Master Peak Table of All Detected Analyte Compounds in Many Petroleum-Based Samples (Wenjing Ma, MDCW 2026)

Our Library never stops expanding. What are the most recent contributions to LabRulezGCMS Library in the week of 30th March 2026? Check out new documents from the field of the gas phase, especially GC and GC/MS techniques!<blockquote>👉 <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library">SEARCH THE LARGEST REPOSITORY OF DOCUMENTS ABOUT GCMS AND RELATED TECHNIQUES</a></blockquote><blockquote>👉 Need info about different analytical techniques? Peek into <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library">LabRulezLCMS</a> or <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/library">LabRulezICPMS</a> libraries.</blockquote>This week we bring you application notes by Agilent Technologies, Thermo Fisher Scientific, brochure by Shimadzu and presentation by MDCW / LECO!<h3>1. Agilent Technologies: Extraction and Analysis of Pesticides from Water by Solid Phase Extraction and GC/MS</h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/an_extraction_analysis_pesticides_water_gcms_5994_8996en_agilent_28fc35d0e7.pdf">Full PDF for download</a></li></ul>Drinking water is defined as water intended for human consumption obtained from different sources. Several guidelines/regulations exist for ensuring that undesirable substances such as pesticides are not present in excessive amounts that may be harmful to human health. These regulations ensure that water intended for human consumption can be consumed safely. In India, the Bureau of Indian Standards (BIS) has set regulatory limits for residual pesticides in drinking water (IS 10500)1 , packaged drinking water (IS 14543)2 , and natural mineral water (IS 13428).3 A total of 26 pesticides are regulated by BIS standards, of which four compounds (monocrotophos, phorate, 2,4-D, and isoproturon) are more suitable for analysis by liquid chromatography.&nbsp;EPA Method 525.2 is a general-purpose method for determination of organic compounds in finished drinking water or water from any source or treatment stage.4 This method is applicable to a range of organic compounds that are partitioned from the water sample onto a C18 organic phase packed in a disk or cartridge. The organic compounds are then eluted using a suitable eluent, concentrated, and analyzed by GC/MS.&nbsp;This application note describes the use of EPA Method 525.2 for extraction of pesticide residues at trace levels in water using solid-phase extraction (Agilent Bond Elut C18: Straight barrel cartridges, p/n 12102118) and analysis using Agilent 8890-5977 GC/MS.&nbsp;Excellent linearity with R2 &gt; 0.995 was obtained for all pesticides considered for the study. Recoveries were obtained in the range of 80–120% with associated RSDs &lt; 15% at 0.005–0.080 ng/mL level of fortification.<h4>Experimental</h4><h5>Instrument parameters</h5><ul><li>GC: <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?manufacturerItems=1&amp;search=8890">Agilent 8890</a></li><li>Column: Agilent <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?manufacturerItems=1&amp;search=J%26W+HP-5ms">J&amp;W HP-5ms</a> UI 30 m × 0.25 mm, 0.25 μm&nbsp;</li><li>Carrier Gas: Helium, constant flow, 1.2 mL/min&nbsp;</li><li>Inlet: Agilent Multimode Inlet (MMI)</li><li>MS: <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?manufacturerItems=1&amp;search=5977">5977 GC/MS</a></li></ul><h4>Conclusion&nbsp;</h4>A simple, easy, and efficient method based on EPA 525.2 was implemented for the determination of 22 pesticides in water. The method demonstrated good sensitivity, precision, and accuracy, and allows for rapid analysis. The results demonstrate that pesticide residues can be detected below the current maximum residue levels (MRL) required by the BIS specifications. Acceptable recoveries and precision were obtained at concentrations as low as 5 ng/L for all pesticides. The method is ideally suited for use in a regulatory laboratory for the determination of pesticides in surface, drinking, and packaged drinking water.<h3>2. MDCW / LECO: Exploring PFAS in Consumer Goods Using GCxGC and High-Resolution Mass Spectrometry</h3><ul><li>Presentation</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/O_3_Alonso_6f61e3ea43.pdf">Full PDF for download</a></li></ul>Per- and polyfluoroalkyl substances (PFAS) are widely used in consumer and industrial products due to their unique physicochemical properties, but their persistence and potential health risks have made their detection increasingly important. This study focuses on developing an untargeted analytical approach for screening PFAS and related compounds in consumer goods using advanced chromatographic and mass spectrometric techniques.The analytical workflow combines gas chromatography with time-of-flight mass spectrometry (GC-TOFMS) and comprehensive two-dimensional gas chromatography coupled with high-resolution TOFMS (GC×GC-HRTOFMS), using systems such as the <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/1097">LECO Pegasus® BTX </a>and <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/38">Pegasus® HRT+</a> platforms. Sample introduction is performed via thermal desorption or pyrolysis, enabling analysis of both volatile and complex matrices. High-resolution MS provides accurate mass measurements and elemental composition, which are essential for identifying unknown compounds and reducing matrix interferences.In the first case study, anti-fog solutions were analyzed and found to contain a wide range of compounds, including fluorotelomer alcohols and related PFAS species. While GC-TOFMS enabled initial screening, high-resolution TOFMS was necessary to characterize unknown compounds through accurate mass determination and complementary ionization techniques (EI and PCI). This approach allowed tentative structural assignment using external databases, demonstrating the importance of HRMS in identifying compounds not present in standard libraries.The second case study focused on chewing gum, a highly complex matrix with diverse chemical constituents and trace-level analytes. The use of GC×GC-HRTOFMS significantly improved chromatographic separation and spectral clarity, enabling detailed profiling of volatile and semi-volatile compounds. A dedicated PFAS screening workflow based on mass defect analysis and spectral filtering was applied, leveraging the characteristic CF₂ patterns of PFAS molecules to simplify data interpretation.Despite the complexity of the sample, no PFAS were detected in the chewing gum, its packaging, or the box. Overall, the study demonstrates that combining GC×GC separation, high-resolution mass spectrometry, and advanced data processing tools provides a powerful and reliable strategy for untargeted PFAS screening in complex consumer products, particularly when unknown or emerging contaminants are of concern.<h3>3. Shimadzu: Gas Chromatograph Nexis GC-2060</h3><ul><li>Brochure</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/c184_e056_06c3456516.pdf">Full PDF for download</a></li></ul>The Shimadzu <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?manufacturerItems=3&amp;search=Nexis+GC-2060">Nexis GC-2060</a> represents a new generation of gas chromatographs, built on over 70 years of GC development and designed to serve as a flexible and future-proof analytical platform. It integrates the concept of Analytical Intelligence, which enables automated system monitoring, troubleshooting, and optimization, helping both experienced and less experienced users achieve reliable and consistent results. The system is highly configurable, supporting up to two injectors, three injection units, and four detectors simultaneously, allowing a single instrument to cover multiple analytical applications.A key advantage of the Nexis GC-2060 is its versatility in sample introduction and detection. The Multi-Mode Injection Unit (MMI) supports a wide range of injection techniques, including split/splitless, PTV, direct injection, large-volume injection (LVI), and thermal desorption, significantly reducing the need for complex sample preparation. The system is also equipped with next-generation detectors such as FID and TCD, offering high sensitivity, stability, and linearity, with additional detector options (ECD, FPD, FTD, BID) enabling broad application coverage.The instrument is designed to maximize laboratory efficiency and minimize downtime. Features such as tool-free column installation (ClickTek), automated startup/shutdown, Easy sTop maintenance mode, and Clean Pilot for automated column conditioning simplify routine operation and reduce manual intervention. In addition, Eco Idling technology automatically optimizes gas and power consumption during standby, significantly lowering operational costs while maintaining readiness for analysis.From an analytical performance perspective, the Nexis GC-2060 delivers excellent reproducibility and sensitivity, supported by advanced autosamplers (e.g., AOC-30) and compatibility with third-party systems. The platform supports hydrogen carrier gas for faster analysis and includes smart gas management features such as automatic gas switching. Its modular design allows seamless integration with various sample preparation systems, autosamplers, and detectors, ensuring adaptability to evolving laboratory needs.Overall, the Nexis GC-2060 combines high performance, operational efficiency, and flexibility in a single platform, making it suitable for a wide range of applications, including pharmaceutical analysis, environmental testing, food analysis, and energy-related measurements. Its scalability and continuous software updates ensure long-term usability and alignment with future analytical requirements.<h3>4. Thermo Fisher Scientific: Accurate multi-component blast furnace gas analysis maximizes iron production and minimizes coke consumption</h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/epm_AN_Iron_Production_Prima_PRO_bd5de98b44.pdf">Full PDF for download</a></li></ul>Over a billion tonnes of iron a year are produced in blast furnaces, representing around 94% of global iron production¹. The blast furnace consists of a large steel stack, lined with refractory brick. Iron ore, coke and limestone are dropped into the top of the furnace and preheated air blown into the bottom through nozzles called ‘Tuyeres’. Iron oxides are reduced in the melting zone, or ‘Bosh’, forming liquid iron (called ‘hot metal’) and liquid slag. These liquid products are drained from the furnace at regular intervals, and the blast furnace will run continuously for several years, until the refractory lining needs replacing.Analysis of carbon monoxide (CO) and carbon dioxide (CO₂) give vital information on the efficiency of the reduction processes. Historically, two non-dispersive infrared (NDIR) analyzers were used, one to measure CO, the other CO₂. Additional discrete analyzers were required to monitor oxygen and hydrogen – typically paramagnetic O₂ analyzers and thermal conductivity analyzers for H₂.&nbsp;Thermo Scientific™ process mass spectrometers have been widely used for many years for key gas analysis applications in iron and steel plants, including blast furnace, basic oxygen steelmaking, coke oven gas analysis, secondary steel process control, fuel gas analysis and direct reduction iron processes²<h4>Process control requirements&nbsp;</h4>The advantages of process MS over conventional analysis techniques have been proven over many years in the iron and steel industry. The ability to measure a wide range of components on a single analyzer, coupled with advanced calibration, data transmission, and self-diagnostic software, makes the modern mass spectrometer ideal for integration into the modern plant. On blast furnaces, superior gas analysis is being used to calculate gas efficiency, mass and heat balances, and heat profiles through probe analysis, as well as being an essential tool in the early detection of cooling water leaks and sample system failures.&nbsp;Figure 2 shows 64 hours of data from a <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/2305">Thermo Scientific™ Prima™ PRO Process MS</a> monitoring the six gases in a blast furnace top gas every 10 seconds. The pulse every 12 hours is generated by an automatic nitrogen blowback from the sample conditioning system, to keep the sample probe clear of particulates.<h4>Hydrogen analysis&nbsp;</h4>An increase in the hydrogen level in the furnace can indicate a leak from the furnace cooling system, as water dissociates into hydrogen and oxygen in the furnace. This has implications both for plant efficiency and plant safety. Water leaks will lower the furnace temperature, causing heat loss and a consequent increase in fuel consumption. In extreme cases, damage to plant and personnel can be caused by ignition of these hazardous mixtures of explosive gases.&nbsp;Figure 4 shows a plot of top gas hydrogen concentration measured by Thermo Scientific process MS over a 24-hour period, with the departure of the measured H2 value from that predicted by the mass balance model indicating a water leak. This leak was caused by the failure of a cooling member, and the furnace was taken off blast for repair. The mass spectrometer’s ability to provide fast, accurate hydrogen analysis removes the need for an additional discrete analyzer.&nbsp;Gas composition measurement is particularly important during the end-of-campaign blowdown that takes place prior to rebuilds and relines, because explosive gas mixtures can be generated.&nbsp;<h4>Probe analysis&nbsp;</h4>The fast analysis provided by MS offers another significant advantage over discrete analyzers—a number of process streams can be analyzed using a single instrument. This is achieved using a fully automated multi-inlet system, designed to switch between sample streams at high speeds with minimal sample flushing times. For example, as well as furnace top gas, the MS can also analyze gases from probes placed above and below the burden (the furnace charge of iron ore, coke and limestone). These are known as above-burden and sub-burden probes and provide valuable information on fuel efficiency, iron conversion and furnace charging. Figure 5 shows a schematic of these two probes; they can be moved across the furnace to build a cross-sectional profile of the furnace.<h4>Summary&nbsp;</h4>Thermo Scientific process mass spectrometers have been successfully monitoring blast furnace off gas at many of the world’s iron and steel companies for over 30 years. For a blast furnace producing 5,000 tonnes a day, a reduction in coke consumption of just 10 kg per tonne of iron produced provides a payback of over $10,000 a day. Users report that the combination of fast, accurate MS gas analysis for gas efficiency, heat and mass balances and hydrogen analysis, with advanced process control and mathematical modeling, has reduced coke consumption by up to 100 kg per tonne and increased iron production. Upgrading to Prima PRO MS can therefore result in complete installation payback within a few weeks.&nbsp;<ul><li>Reduces coke consumption&nbsp;</li><li>Produces consistent quality iron&nbsp;</li><li>Reduces downstream processing costs&nbsp;</li><li>Detects water leaks fast&nbsp;</li><li>Improves thermal control of furnace&nbsp;</li><li>Enables safer operation during blowdown</li></ul>

News from LabRulezGCMS Library - Week 14, 2026

Article

Application

Academy

Video

Presentation

The Multidimensional Chromatography (MDC) Workshop draws experts in this exciting field to share and discuss their research.

The Multidimensional Chromatography Workshop

Eurachem is a European network promoting international traceability of chemical measurements and good analytical practice. It provides expert guidance, supports method validation, uncertainty evaluation, proficiency testing, and facilitates discussion on technical and policy issues in analytical quality.

Eurachem

Everything from the world of analytical chemistry in one place. We connect people in solving their problems. At Labrulez you will find all the necessary information easily, quickly and clearly. Stop searching and start finding.

LabRulez

Thermo Scientific™ EA IsoLink™ IRMS System

With the Thermo Scientific™ EA IsoLink™ IRMS Platform, leverage familiar technology and existing expertise for expanded CNSOH isotope analysis, allowing all elemental analysis on a single platform.

<h3>All your elemental analysis on one platform</h3>The EA IsoLink IRMS Platform leverages the existing technological platform of the EA IsoLink IRMS System and FlashSmart EA.<h4>More freedom. More flexibility.</h4>With the Thermo Scientific™ EA IsoLink™ IRMS Platform, you can leverage familiar technology and your staff’s existing know-how for expanded CNSOH isotope analysis, enabling you to perform all your elemental analysis on one technological platform. With different configurations to choose from, your lab can get the capabilities it needs today, with flexibility for the future. Featuring software- driven automation and scalability to grow as you do.<h4>Choose the configuration that’s right for you.</h4>The EA IsoLink IRMS System is an automated, easy-to-use solution for isotopic analysis of carbon, nitrogen, sulfur, oxygen and hydrogen - using bulk samples powered by chromatography-driven technology with high sensitivity on small samples. Available in basic configurations with upgradeability options, this platform offers high throughput and unattended operation, so your lab can get more done in less time.<h4>The EA IsoLink IRMS System features:</h4><ul><li>Thermo Scientific™ Flash™ IRMS EA for sample preparation for IRMS analysis</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/2231">Thermo Scientific™ ConFlo IV</a> Universal Interface</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/2232">Thermo Scientific™ DELTA™ Q IRMS</a></li></ul><h4>The FlashSmart EA features:</h4><ul><li>Thermo Scientific™ FlashSmart™ EA for weight percentage characterization of CNSHO</li></ul><h3>EA IsoLink CN and CN/OH</h3><ul><li>A powerful solution for C and N, O and H analysis - upgradeable for S analysis</li></ul><h3>EA IsoLink OH</h3><ul><li>Offering dedicated oxygen and hydrogen analysis - with scalability to expand your capabilities to C, N and S</li></ul><h3>EA IsoLink CNSOH</h3><ul><li>A fully automated single system for C, N and S analysis by flash combustion, and O and H analysis by high temperature conversion</li></ul><h4>Connectivity with Thermo Scientific™ IRMS Portfolio</h4>The Flash EA Series connected to the <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/2232">DELTA Q IRMS</a> provides precise and sensitive measurement of the isotope fingerprints - C, N, S, O and H isotopes - a unique chemical signature of samples. This helps you gain unique insights into food history and origin, as well as environmental pollutants, forensics and geosciences.<figure class="image"><img style="aspect-ratio:650/552;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_EA_Iso_Link_IRMS_System_2_01d3ed421c.jpg" alt="Thermo Scientific™ EA IsoLink™ IRMS System" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_EA_Iso_Link_IRMS_System_2_01d3ed421c.jpg 184w," sizes="100vw" width="650" height="552"></figure><h3>More automation. More scalability. All in a single platform.</h3>Delivering proven performance with unprecedented robustness and ease of use, the EA IsoLink IRMS Platform can help your lab drive efficiency, improve cost-effectiveness, and minimize training for new operators.<h4>Low cost per sample for reduced operational costs</h4>Less helium consumption: Helium consumption is reduced by more than 60% for NCS and NC sample analysis, and reduced by more than 30% for OH sample analysis (compared with previous systems).Less replication: Because the EA IsoLink IRMS System measures high and low concentrations in the same sample (wide dynamic range), it reduces the need for replicate analysis (e.g., high carbon and low sulfur, such as in food authenticity or ecology applications).High throughput: Fast analysis provides high sample throughput, resulting in lower cost per sample.<h4>High sensitivity driven by chromatography - even for the smallest sample size</h4>Temperature-ramped GC: Equipped with a temperature-ramped GC feature, the EA IsoLink System gives your lab the highest performance on small sample sizes through optimal baseline separation of analyte gases and sharp peak shapes.Performance synergies: The combination of in-line flash combustion technology and temperature-ramped GC separation significantly improves the performance for all your EA-IRMS applications.<h4>System modularity for future-proof investment</h4>The EA IsoLink IRMS System’s modular design provides the highest flexibility for all applications - enabling you to adapt and scale to new analyses in the future. Through smart upgrade paths, you can easily modify the system to increase performance and productivity as your needs grow over time. Boost your CN system with an S upgrade or add CNS to your OH isotope fingerprints.Thermo Scientific™ MAS Plus Autosampler provides a 125-position helium-purged sample chamber, low blank autosampler for CNS and OH analysis.Thermo Scientific™ AS 1610 Liquid Autosampler offers a versatile solution for injecting liquid samples.Macro reactors enable CNS Analysis of large sample sizes (greater than 60 mg) and higher throughput on standard sample sizes to mg range.<h4>Added flexibility with flash EA series</h4>The flexibility of the Flash EA Series helps you meet growing analytical needs in IRMS and Organic Elemental Analysis (OEA).The FlashSmart Elemental Analyzer for OEA delivers accuracy and precision with internationally recognized certifications. Its straightforward modular design offers a variety of optimized application configurations, including CHN, CHNS, S, N/Protein, CN, CNS, CHNS/O and more. High throughput with 24/7 operation, low cost per sample and optimized helium consumption are all driven by our fully automated dedicated OEA software, Thermo Scientific™ EagerSmart™ Data Handling Software, which can grow with your analytical needs without need for an upgrade.<h4>Smart automation for ease of use</h4>Because of its intelligent software and intuitive design, the EA IsoLink Platform allows operators to leverage familiar technology for higher productivity.Software Platform: <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/products/1489">The Thermo Scientific™ Qtegra™ Intelligent Scientific Data Solution </a>(ISDS) Software provides seamless control and automation for unattended operation and improved productivity. Regardless of operator skills or the final application, the <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/products/1489">Qtegra ISDS Software</a> offers logical, streamlined interface allowing straight forward measurement set-up through analytical Workflows. The software includes auto-stop, standby modes, and other features to minimize intervention. It also allows for integrated data evaluation strategies, customized reports and method development. All of the auto-diagnostics ensure important aspects of the instrument are monitored, maximizing uptime.Thermo Scientific™ smartEA option: This option allows you to focus on your research by combining ease-of-use and unattended analysis to deliver high-precision results. The smartEA option uses the analyzer’s Thermal Conductivity Detector (TCD) trace to define the required sample dilutions in the <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/2231">ConFlo IV Universal Interface</a>. The straightforward automated workflow allows you to analyze very small amounts, such as nitrogen and sulfur, along with highly abundant elements, such as carbon - all from the same sample.<h3>Addressing a world of applications</h3>For origin and authenticity questions, the EA IsoLink IRMS Platform provides precise and sensitive measurement of the isotope fingerprints - C, N, S, O and H isotopes - a unique chemical signature of samples, helping you gain unique insights into their history and origin.<h4>Food authenticity and origin</h4>Is the label declaration on my food correct?From fruits and vegetables, to wine, honey and coffee, the EA IsoLink IRMS Platform provides isotopic fingerprints ideally suited to determining food integrity.<ul><li>Food adulteration</li><li>Food and beverage origin</li><li>Agronomy</li></ul><h4>Environmental</h4>What is the source of pollution in the soil, water or air?An assessment of individual organic pollutants particles in air contamination (e.g. PM2.5) will be traced with C, N, and S isotope fingerprints.<ul><li>Marine science</li><li>Ecology and biology</li><li>Petroleum and exploration</li></ul><h4>Geosciences</h4>What was the weather like thousands of years ago?By analyzing materials such as sediments, ice cores and speleothems, researchers can understand epochal changes in vegetation, rainfall patterns and temperature.<ul><li>Soil science</li><li>Palaeoclimatology research</li></ul><h4>Forensics</h4>How can we investigate provenance and dietary preferences?From tracing explosives, illegal drugs, counterfeit currency, animal tissues such as ivory, dietary preferences and crime scene evidence, forensic investigations based on isotope fingerprints examine samples’ origin.<ul><li>Archaeology</li><li>Provenance</li></ul><h3>Connectivity for origin and authenticity</h3>Your lab can focus on isotopic investigations by taking advantage of having one partner and one platform for your elemental and isotope analysis. Thanks to the connectivity of the <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/2232">DELTA Q IRMS</a> and the connecting peripherals that are fully controlled by the <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/products/1489">Qtegra ISDS Software</a>, you can also leverage the high throughput, unattended operation and flexibility for demanding analysis, regardless of the applications.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_EA_Iso_Link_IRMS_System_2_dcb8a3d338.jpg" alt="Thermo Scientific™ EA IsoLink™ IRMS System " srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_EA_Iso_Link_IRMS_System_2_dcb8a3d338.jpg 245w," sizes="100vw" width="1464" height="933">

Thermo Scientific™ Q Exactive™ GC Orbitrap GC-MS/MS System

High-resolution GC-MS system combining Orbitrap accuracy with full-scan sensitivity and MS/MS power for confident quantitation and compound identification in complex matrices.

<h4>Next-generation high-resolution GC-MS for confident quantitation and unknown identification</h4>The Q Exactive GC Orbitrap GC-MS/MS system is the first commercial benchtop system to combine gas chromatography with Orbitrap™ high-resolution accurate-mass (HRAM) detection. It offers unrivaled resolving power, sub-ppm mass accuracy, and the quantitation power of triple quadrupole systems — all in untargeted full-scan mode.Designed for food safety, metabolomics, environmental, clinical, and pharmaceutical labs, this hybrid quadrupole-Orbitrap system brings unmatched performance for both discovery and targeted workflows, with robust EI/CI ionization, smart deconvolution, and intuitive software.<h3>Key Benefits</h3><h4>🎯 High-resolution power for confident detection</h4><ul><li>Up to 100,000 resolution (FWHM) at m/z 272</li><li>Sub-1 ppm mass accuracy (internal) in routine full-scan MS</li><li>Accurate detection even in part-per-trillion range</li><li>Resolves coeluting peaks in complex matrices with ease</li></ul><h4>💡 Unmatched qualitative and quantitative versatility</h4><ul><li>EI, PCI, NCI ionization with ExtractaBrite™ source (removable under vacuum)</li><li>Full-scan sensitivity equal to SRM mode of triple quadrupoles</li><li>PRM and MS/MS with HCD collision cell</li><li>Variable electron voltage (VeV) for softer EI and improved identification</li></ul><h4>🧠 Advanced tools for unknown identification</h4><ul><li>Deconvolution software with HRAM fragment interpretation</li><li>Compatibility with NIST/Wiley libraries and HRAM spectral libraries</li><li>Supports <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/77">TraceFinder™</a>, <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/1759">Compound Discoverer™</a>, and<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1757"> Mass Frontier™</a></li></ul><h3>System Capabilities</h3><ul><li>Mass range: 30–3000 m/z</li><li>Mass accuracy: &lt;1 ppm RMS (internal), &lt;3 ppm RMS (external)</li><li>Quantitative dynamic range: &gt;10⁶</li><li>In-spectrum dynamic range: &gt;5000:1</li><li>Scan speed: up to 18 Hz @ 12,500 resolution</li><li>Simultaneous detection of up to 10 precursors per scan</li></ul><h3>Operation &amp; Workflow</h3><ul><li>Full MS, SIM, Timed SIM, PRM, polarity switching, DDA</li><li>Automatic gain control (AGC) ensures optimal ion population in Orbitrap</li><li>Easy maintenance with vent-free source and column exchange</li><li>Seamless <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1758">Xcalibur™</a> and <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/77">TraceFinder™</a> control with automated tuning/calibration</li></ul><h3>Sample Introduction &amp; Automation</h3><ul><li>Compatible with TRACE™ 1310 GC with Instant Connect injectors</li><li>Autosamplers: TriPlus RSH for full automation and microsample workflows</li><li>Direct probes (DEP/DIP) for solid/liquid samples — no venting required</li></ul><h3>Applications</h3><ul><li>Food safety &amp; authenticity (pesticides, packaging migration)</li><li>Metabolomics, environmental &amp; clinical toxicology</li><li>Extractables &amp; leachables, forensics, pharmaceuticals</li><li>Untargeted and targeted multi-analyte screening</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/application::product.product/QExactive-GCMSMS-Orbitrap-with-Autosampler-Front-1858x1391.jpg-650.jpg" alt="Thermo Scientific™ Q Exactive™ GC Orbitrap GC-MS/MS System" width="null" height="null">

Thermo Scientific™ Exactive™ GC Orbitrap™ GC-MS System

High-resolution Orbitrap GC-MS system for confident quantitation and unknown screening. Delivers sub-ppb sensitivity, <1 ppm accuracy, and routine full-scan workflows.

<h4>Bringing high-resolution Orbitrap technology into routine GC-MS workflows</h4>The Exactive GC Orbitrap system offers the unmatched mass accuracy, resolving power, and sensitivity of Orbitrap technology in a platform optimized for routine applications. This high-performance GC-MS system enables both targeted and non-targeted full-scan workflows with confident quantitation and trace-level detection, even in complex matrices. Designed for maximum robustness and usability, it streamlines operations across food safety, environmental, industrial, forensic, and anti-doping laboratories.<h3>Key Features and Benefits</h3><h4>💡 Unmatched HRAM Performance</h4><ul><li>Resolving power up to 60,000 FWHM at m/z 200</li><li>Mass accuracy: &lt;1 ppm (internal), &lt;3 ppm (external)</li><li>Quantitative dynamic range: &gt;10⁶, with excellent linearity and precision</li><li>Routine IDLs in the sub-ppb to ppt range</li></ul><h4>🧪 Full-Scan Sensitivity and Selectivity</h4><ul><li>Combines triple-quad-like quantitation with full-scan Orbitrap capability</li><li>Sub-ppb sensitivity for 100+ pesticides in food matrices</li><li>High selectivity and confidence in trace-level compound identification</li><li>Spectral deconvolution with accurate-mass fragment filtering</li></ul><h4>⚙️ Proven Orbitrap Design</h4><ul><li>Curved linear trap (C-Trap) and bent flatapole ion optics</li><li>ExtractaBrite™ ion source (EI/PCI/NCI) – removable under vacuum</li><li>Vent-free column exchange using patented source plug</li><li>Optional direct sample probes (DIP, DEP) for solid or thermolabile analytes</li></ul><h4>🧠 Streamlined Software and Data Processing</h4><ul><li>Controlled by <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/77">TraceFinder™</a> and <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1758">Xcalibur™</a> platforms</li><li>Full-scan acquisition with automated data mining</li><li>Integrated spectral libraries (NIST, Thermo Food/Environmental)</li><li>Spectral fidelity and mass accuracy retained across wide concentration range</li></ul><h4>🔁 Optimized GC Integration</h4><ul><li>Built on the TRACE™ 1310 GC platform</li><li>Supports all injection/detection configurations (SSL, PTV, backflush, etc.)</li><li>Paired with TriPlus™ RSH autosampler for advanced robotic sample handling</li><li>Excellent retention time stability and fast oven cycling</li></ul><h3>Ideal For Applications In:</h3><ul><li>Food safety and authenticity (pesticide screening, additives)</li><li>Environmental analysis (contaminants, pollutants, air toxics)</li><li>Forensics and toxicology (unknowns, drugs, metabolites)</li><li>Industrial QC (extractables, volatiles, impurity profiling)</li><li>Non-targeted screening with full-scan HRAM and retrospective analysis</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/application::product.product/exactive-gc-orbitrap-gc-ms-front-2000x2000.jpg-650.jpg" alt="Thermo Scientific™ Exactive™ GC Orbitrap™ GC-MS System" width="null" height="null">

Thermo Scientific Triton Series Multicollector Thermal Ionization Mass Spectrometer (TIMS)

High-precision multicollector TIMS for demanding isotope ratio analysis, delivering exceptional sensitivity, stability, and accuracy for ultra-small and low-abundance samples.

The Thermo Scientific™ Triton™ Series Multicollector Thermal Ionization Mass Spectrometer (TIMS) is a high-precision platform designed for the most demanding isotope ratio measurements. Built on more than two decades of continuous development, the Triton Series combines field-proven TIMS performance with state-of-the-art detection and ion-optical technologies to deliver exceptional accuracy, stability, and sensitivity—especially for small samples and low-abundance isotopes.At the heart of the Triton Series is a high-stability thermal ionization source, optimized for maximum ion transmission and minimal kinetic energy spread. This ensures highly reproducible ion beams for both single- and double-filament techniques, enabling precise isotope ratio analysis across a wide range of elements and applications.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Triton_Series_Multicollector_Thermal_Ionization_Mass_Spectrometer_TIMS_2_e9fa5e958e.jpg" alt="Thermo Scientific Triton Series Multicollector Thermal Ionization Mass Spectrometer (TIMS)" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Triton_Series_Multicollector_Thermal_Ionization_Mass_Spectrometer_TIMS_2_e9fa5e958e.jpg 182w," sizes="100vw" width="650" height="558"><h3>Advanced detection and ion optics</h3>The Triton Series integrates multiple complementary detector technologies to address diverse analytical challenges:<ul><li>10¹³ Ω Amplifier Technology extends the lower detection limits, delivering faster response times, extremely low noise, and significantly improved internal precision for small ion beams.</li><li>Retarding Potential Quadrupole (RPQ) lenses provide exceptional abundance sensitivity by suppressing scattered ions and mass tailing, enabling accurate quantification of minor isotopes even next to intense ion beams.</li><li>Multi Ion Counting (MIC) packages allow simultaneous detection of the lowest-intensity ion beams using SEM and CDD ion counters, with flexible configurations tailored to nuclear, geochronological, and geochemical applications.</li><li>Stable, linear SEM and CDD ion counters ensure reliable measurements for ultra-low sample amounts and rare isotopes.</li><li>High-performance Faraday cups guarantee uniform response, long operational lifetime, and excellent linearity for high-precision static and dynamic measurements.</li><li>Movable multicollector array supports up to nine Faraday cups with precise alignment over a wide mass range, extendable to static Ca and Li isotope measurements.</li><li>Virtual amplifier technology enables cancellation of gain factor uncertainties through amplifier rotation, achieving low-ppm external reproducibility in efficient static measurement modes.</li></ul><h3>Designed for the most demanding isotope ratio applications</h3>The Triton Series is ideally suited for applications where ultimate precision and high abundance sensitivity are essential, including:<ul><li>Radiogenic and stable isotope geochemistry</li><li>Geochronology (U–Pb, Pb–Pb, Rb–Sr, Sm–Nd, Lu–Hf systems)</li><li>Nuclear safeguards and nuclear forensic isotope analysis</li><li>Environmental and cosmochemical research</li><li>Analysis of ultra-small sample amounts and isotopically scarce materials</li></ul>Available in configurations such as Triton XT and Triton Plus, tailored to different performance priorities within high-precision isotope ratio analysis, the Thermo Scientific Triton Series TIMS offers a flexible, future-proof solution that continues to set the benchmark for thermal ionization mass spectrometry.

Thermo Scientific ConFlo IV Universal Continuous Flow Interface

Universal continuous flow interface for IRMS enabling automated multi-device control, higher throughput, lower costs, and stable, unattended isotope analysis.

Thermo Scientific™ ConFlo IV Universal Continuous Flow Interface is a versatile continuous flow interface designed to significantly expand the application range of stable isotope laboratories using isotope ratio mass spectrometry (IRMS). The ConFlo IV system enables seamless connection of multiple sample preparation devices, delivering fully automated, stable, and highly reproducible measurements.The system features intelligent management of all required reference gases, automatic sample-size recognition, precise matching of sample and reference signals, and advanced self-diagnostics. These capabilities reduce operator involvement, lower operating costs, and increase overall laboratory throughput.<h3>Key features</h3><ul><li>Management of multiple devices Automated switching between different sample preparation units, including activation, deactivation, and reference gas changes, maximizes IRMS utilization.</li><li>Continuous, unattended operation Application switching can occur at any time without operator intervention; preparation devices can be regenerated and reloaded while other analyses are running.</li><li>Maximized performance and efficiency Using reference gases instead of bulk reference materials reduces operating costs by nearly 50 % while increasing sample throughput by almost 50 %.</li><li>Enhanced accuracy and stability Automatic adjustment of reference gas pulse intensities equalizes conditions between sample and reference gases, improving precision and long-term reliability.</li><li>Advanced data quality control Critical system parameters affecting data quality are automatically monitored across all sample sequences.</li><li>Single-interface control All connected preparation and inlet devices are controlled through one interface, with the ability to add new samples or entirely new applications without interrupting ongoing data acquisition.</li></ul>

Thermo Scientific DELTA Q Isotope Ratio Mass Spectrometer

High-performance IRMS combining exceptional sensitivity, robust design, and intuitive Qtegra ISDS software for food authenticity, environmental, forensic, and research isotope applications.

The Thermo Scientific™ DELTA™ Q Isotope Ratio Mass Spectrometer (IRMS) represents a new evolutionary step in isotope ratio analysis, combining outstanding analytical performance with intuitive operation powered by <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/products/1489">Qtegra™ Intelligent Scientific Data Solution (ISDS)</a> software.&nbsp;The DELTA Q IRMS is designed for seamless integration with a wide range of Thermo Scientific peripherals, making it a highly flexible platform for applications such as food authenticity testing, environmental and forensic analysis, doping control, and advanced scientific research.<h4>Outstanding sensitivity</h4><ul><li>Sensitivities of up to 800 molecules per CO₂ ion in dual-inlet mode and 1,000 molecules per ion in continuous-flow mode.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_DELTA_Q_Isotope_Ratio_Mass_Spectrometer_2_671e47510f.jpg" alt="Thermo Scientific DELTA Q Isotope Ratio Mass Spectrometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_DELTA_Q_Isotope_Ratio_Mass_Spectrometer_2_671e47510f.jpg 197w," sizes="100vw" width="650" height="517"><h4>Versatility for diverse applications</h4><ul><li>Support for up to 10 collectors in multiple configurations, covering all IRMS applications up to m/z 96.</li><li>Simultaneous mass range up to ±25%, enabling efficient multi-isotope measurements.</li><li>Compatibility with preconcentrators, elemental analyzers, GC interfaces, LC interfaces, and continuous-flow inlets.</li><li>On-line H₂ capability for hydrogen isotope analysis.</li></ul><h4>Highly robust and reliable design</h4><ul><li>A monolithic analyzer with fixed alignment of all ion-optical components, including the electromagnet, ensuring exceptional long-term stability and robustness.</li><li>Integrated signal amplifiers and digitizers minimize external connections and increase reliability.</li><li>Fixed-position ion optics eliminate the need for realignment during installation or routine maintenance.</li><li>Optimized pumping strategy enables single-stage turbo pumping for all standard continuous-flow applications.</li><li>Comprehensive, automated diagnostics driven by Qtegra ISDS software support continuous performance monitoring.</li></ul><h4>Compact and user-friendly design</h4><ul><li>Compact footprint requiring minimal laboratory space.</li><li>Dedicated space for online peripherals on top of the instrument.</li><li>Dual inlet, µ-volume, and multiport interfaces are neatly integrated inside the system.</li><li>Continuous-flow interfaces can be fully controlled from the front panel.</li><li>All pumps are located internally, reducing noise and laboratory clutter.</li></ul><h4>Qtegra™ ISDS Software</h4><ul><li>Significantly increases laboratory productivity with automatic Get Ready functionality, ready-to-use templates, and built-in quality control tools.</li><li>Intelligent, optimized workflows guide users from sample to result while allowing flexible switching between system configurations.</li><li>Ensures full data integrity and traceability for raw data, metadata, and reported results.</li></ul><h4>ACT label certification</h4>The DELTA Q IRMS is certified with the ACT Environmental Impact Label from My Green Lab, providing transparent, third-party verified information on environmental impact across manufacturing, energy and water use, packaging, and end-of-life considerations—supporting sustainable laboratory procurement and reduced carbon footprint.

Thermo Scientific Orbitrap™ Exploris™ GC Mass Spectrometer

Transform your data quality to deliver the right answer first time, every time with the Thermo Scientific™ Orbitrap™ Exploris™ GC Mass Spectrometer.

<div><div id="product-description">Simplify operations and deliver consistently accurate results in analytical testing using the Thermo Scientific™ Orbitrap™ Exploris™ GC Mass Spectrometer. This GC-MS system offers a unique depth of analysis and unparalleled accuracy and precision to improve everyday quantitation, screening and sample profiling. It provides the flexibility to keep pace with ever-changing regulations and explore new analytical opportunities through increased scope and method consolidation. Simple instrument set up and intelligent informatics enable users of all abilities to easily access data-rich information.</div><div><h4>Deliver accurate quantitative results and spend less time reviewing data in high throughput analytical testing</h4><ul><li>Offers the power and flexibility of full-scan high-resolution accurate mass data to quantitative, screening and discovery workflows</li><li>Accelerates data reviewing with multi-point compound identification, including spectral matching, isotope pattern match, retention indices and multiple confirmation ions</li></ul><h4>Be one step ahead of changing demands</h4><ul><li>Provides the flexibility to keep pace with ever-changing regulations and enables you to explore new business opportunities through increased scope and method consolidation</li><li>Offers the option to configure the system with either 30,000 or 60,000 mass resolving power and the ability to add MS/MS capability today or in the future</li></ul><h4>Focus on results, not instrument setup</h4><ul><li>Simple instrument set up and intelligent informatics enable users of all abilities to easily access data-rich information</li><li>Next-generation software, including built-in method templates, provides easy-to-use and flexible options that are fully accessible to all members of the analytical team</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Fisher_Scientific_Thermo_Scientific_Orbitrap_Exploris_GC_Mass_Spectrometer_337a570de7.jpg" alt="Thermo Fisher Scientific: Thermo Scientific Orbitrap™ Exploris™ GC Mass Spectrometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Fisher_Scientific_Thermo_Scientific_Orbitrap_Exploris_GC_Mass_Spectrometer_337a570de7.jpg 245w," sizes="100vw" width="1032" height="617"><h4>Benefits that boost productivity</h4><h5>Increase scope</h5>Gain the flexibility to quickly add new compounds without compound optimization and decide post acquisition which analytes to measure.<h5>Fast system setup</h5>Walk up, tune, and calibrate in under five minutes with full confidence that the system is operating at maximum performance for all users.<h5>Efficient review and reporting</h5>Use multiple points of identification to quickly confirm or reject detections, increasing peace of mind. Spectral matching, isotope patterns, retention indices, and elemental compositions provide high confidence in results.<h5>Accurate quantitation</h5>Six orders of linear dynamic range covers the concentrations encountered in even the most complex sample matrices.<h5>Method consolidation</h5>Combine acquisition methods onto a single system, reducing the need for multiple systems and streamlining data processing.<h5>Retrospective analysis</h5>Interrogate previously acquired high-resolution accurate-mass (HRAM) data in multiple ways to answer additional analytical questions without additional sample injections.<h4>Power GC-MS with Thermo Scientific software solutions</h4><ul><li>Chromeleon CDS: Enterprise-ready, regulatory-compliant quantitation</li><li>TraceFinder software: High-throughput screening and quantitation</li><li>Compound Discoverer software: Small-molecule unknown identification</li></ul><h3>Specifications</h3><ul><li>Dynamic Range: &gt;5000 within a single Orbitrap mass analyzer spectrum</li><li>Mass Range: 30 to 3000 m/z</li><li>Mass Accuracy: External calibration achieves &lt;3 ppm RMS drift over 24 hours, Internal lock mass calibration achieves &lt;1 ppm RMS drift over 24 hours</li><li>Resolution: Up to 60,000 at m/z 200</li><li>Scan Rates: Up to 40 Hz at resolution setting 7,500 at m/z 200</li><li>Description: Orbitrap Exploris GC Mass Spectrometer, no MS/MS</li></ul></div></div>

Thermo Scientific™ Orbitrap™ Exploris™ GC 240 Mass Spectrometer

Take research capability to a new, unprecedented level of performance with the Thermo Scientific™ Orbitrap Exploris™ GC 240 mass spectrometer and accelerate your scientific discovery. 

Simplify the most complex analytical challenges and achieve excellent data quality with the Thermo Scientific™ Orbitrap™ Exploris™ GC 240 mass spectrometer.&nbsp;By delivering uncompromising qualitative and quantitative information, this high-resolution accurate-mass GC-MS system addresses the evolving requirements of research laboratories for compound identification and quantitation. From discovery profiling, metabolomics and applied quantification, scientists gain unparalleled access to information-rich data and results.Experience breakthrough performance in high resolution GC-MS analysis to gain the deepest insights into your sample.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Orbitrap_Exploris_GC_240_Mass_Spectrometer_1_99d830b929/Thermo-Orbitrap-Exploris-GC-240-Mass-Spectrometer-1.jpg" alt="Thermo Scientific™ Orbitrap™ Exploris™ GC 240 Mass Spectrometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Orbitrap_Exploris_GC_240_Mass_Spectrometer_1_99d830b929/thumbnail_Thermo-Orbitrap-Exploris-GC-240-Mass-Spectrometer-1.jpg 156w," sizes="100vw" width="650" height="650"><h5>The Orbitrap Exploris GC 240 mass spectrometer:</h5><ul><li>Enables you to get the right answer first time</li><li>Offers the flexibility to adapt to ever-changing needs with its superior mass accuracy, dynamic range and robustness</li><li>Includes intelligent instrument setup and an intuitive user experience to make it fully accessible for users of all skill levels</li><li>Offers unprecedented 240,000 resolution (at m/z 200) to deliver sub-1-ppm mass accuracy and sensitivity down to part-per-trillion concentrations</li><li>Maintains system sensitivity at all mass resolution levels, so there is no need to compromise between resolution and sensitivity</li><li>Features repeatable performance injection after injection to enable discoveries to be made across high sample studies</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Orbitrap_Exploris_GC_240_Mass_Spectrometer_2_8a411289bf/Thermo-Orbitrap-Exploris-GC-240-Mass-Spectrometer-2.jpg" alt="Thermo Scientific™ Orbitrap™ Exploris™ GC 240 Mass Spectrometer" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Orbitrap_Exploris_GC_240_Mass_Spectrometer_2_8a411289bf/thumbnail_Thermo-Orbitrap-Exploris-GC-240-Mass-Spectrometer-2.jpg 156w," sizes="100vw" width="650" height="650"><h3>Thermo Scientific™ Orbitrap™ Exploris™ GC 240 Mass Spectrometer Specifications</h3><ul><li>Description: Orbitrap Exploris GC 240 Mass Spectrometer</li><li>Dynamic Range: &gt;5000 within a single Orbitrap mass analyzer spectrum</li><li>Mass Accuracy: External calibration achieves &lt;3 ppm RMS drift over 24 hours, Internal lock mass calibration achieves &lt;1 ppm RMS drift over 24 hours.</li><li>Scan Rates: Up to 40 Hz at resolution setting 7,500 at m/z 200</li><li>Mass Range: 30 to 3000 m/z</li><li>Resolution: Up to 240,000 at m/z 200</li><li>Unit Size: Each</li></ul>

Products focused on GC/HRMS from Thermo Fisher Scientific - page 1

Related content

News from LabRulezGCMS Library - Week 14, 2026

Implementing Tile-Based Fisher Ratio Analysis of GC×GC-TOFMS Data to Obtain a Master Peak Table of All Detected Analyte Compounds in Many Petroleum-Based Samples (Wenjing Ma, MDCW 2026)

Performance Assessment of Binary Output Examinations in Medical Laboratories