<p><strong>Our Library never stops expanding. What are the most recent contributions to LabRulezGCMS Library in the week of 25th May 2026? Check out new documents from the field of the gas phase, especially GC and GC/MS techniques!</strong></p><blockquote><p><span style="font-size:20px;">👉 </span><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library"><span style="font-size:20px;"><strong>SEARCH THE LARGEST REPOSITORY OF DOCUMENTS ABOUT GCMS AND RELATED TECHNIQUES</strong></span></a></p></blockquote><blockquote><p><strong>👉 Need info about different analytical techniques?</strong> Peek into <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library"><strong>LabRulezLCMS</strong></a> or <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/library"><strong>LabRulezICPMS</strong></a> libraries.</p></blockquote><p>This week we bring you application note by<strong> Shimadzu, </strong>presentation by <strong>MDCW / University of Washington</strong> and poster by <strong>Waters Corporation!</strong></p><h3><strong>1. MDCW / University of Washington: 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</strong></h3><ul><li>Presentation</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/O_9_Halvorsen_136808e314.pdf"><strong>Full PDF for download</strong></a></li></ul><section><div><div><div><div><div><div><p>This presentation describes the development of a new chemometric workflow for processing <strong>GC×GC-TOFMS (comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry)</strong> data from petroleum-derived fuels. The work was conducted by researchers from the University of Washington in collaboration with Chevron Technical Center and focuses on creating a comprehensive <strong>Master Peak Table (MPT)</strong> containing all detectable analytes across multiple fuel sample classes. The motivation was that moving from conventional GC to GC×GC dramatically increased chromatographic peak capacity and resolution, but also created a need for more sophisticated data analysis methods capable of handling the much larger number of detected compounds.</p><p>The analytical platform employed <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/37"><strong>GC×GC-TOFMS</strong></a> with a <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/1289"><strong>thermal-flow modulator</strong></a> and a TOF mass spectrometer detector. Fuel samples were analyzed using an <strong>Rxi-1 column (30 m × 0.25 mm × 0.25 μm)</strong> in the first dimension and an <strong>Rxi-17MS column (2.0 m × 0.18 mm × 0.20 μm)</strong> in the second dimension. The sample set included multiple petroleum products such as hydrobates, reformates, naphthas, FCC gasoline, and blank samples. Log-scale chromatograms revealed numerous late-eluting trace compounds and significant compositional differences between fuel batches that were not readily visible in conventional chromatographic representations.</p><p>To process these highly complex datasets, the researchers implemented a <strong>tile-based Fisher Ratio (F-ratio) chemometric approach</strong> using <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/348"><strong>ChromaTOF Tile software</strong></a>. The method divides GC×GC chromatograms into small tiles and identifies regions where analyte signals differ significantly between sample classes by comparing between-class and within-class variance. Instead of relying solely on F-ratio ranking, the workflow incorporates statistical testing against blank samples. Three blank chromatograms were used to establish tile-specific confidence intervals and p-test thresholds, allowing the system to determine whether detected signals represent genuine compounds rather than background noise. This strategy enabled the creation of a unified master peak table while minimizing problems caused by retention-time shifts and reducing the need for manual user intervention.</p><p>Application of the method generated <strong>719 statistically significant analyte hits</strong> across the fuel classes and demonstrated excellent reproducibility, with only <strong>6.3% of classifications showing inconsistent behavior among replicates</strong>. Detected compounds included hydrocarbons and aromatic species such as <strong>1-methylnaphthalene, 1,2,4-trimethylbenzene, β-vatirenene, 2-octene, and tetramethylheptadecane</strong>, whose occurrence patterns aligned well with expected fuel chemistry. The resulting master peak table contained both shared and sample-specific compounds and provided a much more comprehensive representation of petroleum composition than conventional workflows. The authors conclude that the approach should be broadly applicable to other complex sample types and could be extended using alternative chemometric metrics beyond Fisher Ratio analysis to address different experimental objectives.</p><h3><strong>2. Shimadzu: A Simple Method for Determination of β-Sitosterol as a Marker of Vegetable Oil Adulteration in Ghee by GC</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/an_06_sip_gc_042_en_f4c307005b.pdf"><strong>Full PDF for download</strong></a></li></ul><h5><strong>User Benefits</strong></h5><ul><li>ShimadzuNexis GC-2030 can be effectivelyused for determination of adulteration of Ghee with vegetable oil.</li><li>The NexisGC-2030 easily meets the acceptancecriteria as per the proposed FSSAI method no.01.097:2022.</li><li>This method is suitable for routine food industry analysis and academic research.</li></ul><p>The most common milk product in Indian cuisine is ghee or clarified butter. Due to its high cost, ghee is adulterated with vegetable oil, to gain commercial benefits. β-sitosterol, a common phytosterol, found in a variety of natural sources, including vegetable fat or oil from plants (Figure 1). It is used as a marker of vegetable oil adulteration in ghee<sup>1</sup>.</p><p>The primary goal of this study is to assess the vegetable oil adulteration in ghee by analyzing β-Sitosterol as a marker using gas chromatography (GC). This will establish a foundation for the rapid detection of ghee adulteration. In this study, a simple, sensitive, and inexpensive method is developed for extraction of β-Sitosterol from ghee which is then subjected to gas chromatography with flame ionization detection for quantitation. The effects of several important parameters influencing the extraction efficiencies of β-Sitosterol including water-immiscible organic solvent (type and volume), volume of water, sonication time, surfactant (type and concentration), and organic modifier (type and volume) were investigated. This method is ideal for routine analysis in the food industry during the manufacturing, processing, and commercial testing of milk fat samples, or for academic research purposes.</p><h4><strong>&nbsp;Sample Preparation and Analysis Conditions</strong></h4><p>Standard and sample preparations were conducted following the guidelines outlined in the proposed FSSAI method No. 01.097:20222. The analysis was performed using a Shimadzu <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?mainauthorItems=1&amp;search=Nexis+GC-2030"><strong>Nexis GC-2030</strong></a> equipped with a Flame Ionization Detector (FID), as shown in Figure 2. The specific configuration and analytical conditions used during the study are provided in Table 1.</p><h4><strong>Conclusion&nbsp;</strong></h4><p>A gas chromatography–based method using GC-2030 was developed for the estimation of β-Sitosterol in ghee. The method exhibits a detection limit of 2 %, enabling the identification of vegetable oil adulteration in ghee at levels as low as 2 %. At this adulteration level, the signal of β-Sitosterol achieved a signal-to-noise (S/N) greater than 3, confirming the reliability of detection at the established limit. This method provides a reliable and effective approach for the quantification of β-Sitosterol, which serves as a marker for vegetable oil adulteration in ghee.</p><h3><strong>3. Waters Corporation: Multidimensional Characterization of Short Chain Chlorinated Paraffins (SCCPs) with GC-APCI and Cyclic Ion Mobility</strong></h3><ul><li>Poster</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/720009386_3232568115.pdf"><strong>Full PDF for download</strong></a></li></ul><p>This poster presents a multidimensional analytical approach for the characterization of <strong>short-chain chlorinated paraffins (SCCPs)</strong>, a class of persistent environmental pollutants included in the Stockholm Convention due to their environmental persistence and bioaccumulation potential. SCCPs are highly complex mixtures of chlorinated hydrocarbons containing thousands of possible congeners, making their analysis particularly challenging. The study evaluates the use of <strong>gas chromatography coupled with atmospheric pressure chemical ionization, cyclic ion mobility spectrometry, and high-resolution mass spectrometry (GC-APCI-IMS-HRMS)</strong> as a powerful platform for improved SCCP characterization.</p><p>The analytical instrumentation consisted of a modified <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?mainauthorItems=10&amp;search=8890"><strong>Agilent 8890 gas chromatograph</strong></a> equipped with an <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?mainauthorItems=7&amp;search=Rxi-5SilMS"><strong>Rxi-5SilMS capillary column</strong></a><strong> (30 m × 0.25 mm × 0.25 μm)</strong> and connected to a <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/202"><strong>Waters SELECT SERIES Cyclic IMS</strong></a><strong> high-resolution mass spectrometer</strong> using an <strong>Atmospheric Pressure GC (APGC) ion source</strong>. Unlike conventional electron ionization methods, APCI was operated in negative-ion mode with a chloroform modifier, promoting the formation of characteristic <strong>[M+Cl]⁻ molecular ions</strong>. This significantly reduced fragmentation and provided strong molecular-ion signals, improving both qualitative identification and quantitative analysis of SCCP homologues.</p><p>Using three commercial SCCP technical mixtures (51.5%, 55%, and 63% chlorine content), the researchers demonstrated that GC-APCI-HRMS could selectively detect SCCP homologues according to carbon-chain length and degree of chlorination. Although substantial chromatographic overlap was observed among many homologues, the addition of <strong>ion mobility spectrometry (IMS)</strong> introduced a valuable extra separation dimension. Distinct drift-time versus m/z trendlines were observed for compounds sharing the same number of chlorine atoms, allowing homologues to be grouped and characterized more effectively than by chromatographic retention and mass spectrometry alone. The IMS data also enabled estimation of the relative abundance of individual homologue groups within each technical mixture.</p><p>The authors further explored the resolving power of the <strong>cyclic IMS device</strong> by employing multiple ion-mobility passes (up to eight cycles) to investigate individual SCCP congeners. While complete separation of individual congeners within a homologue group was not achieved, higher ion-mobility resolution revealed measurable differences between early- and late-eluting species and provided additional insight into compositional differences among SCCP mixtures. The study concludes that combining <strong>GC-APCI, cyclic ion mobility spectrometry, and high-resolution mass spectrometry</strong> offers a powerful multidimensional workflow for the characterization of complex chlorinated paraffin mixtures and may improve environmental monitoring and future regulatory analysis of these challenging contaminants.</p></div></div></div></div></div></div></section>

News from LabRulezGCMS Library - Week 22, 2026

<p><strong>Low analyte recovery is one of the most common challenges encountered during Solid Phase Extraction (SPE) sample preparation. In this Phenomenex Video Tip, Genevie Hodson, Senior Manager of Technical Support and Applications at Phenomenex, explains a practical troubleshooting approach for situations where analyte recovery after an </strong><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=6&amp;manufacturerItems=50"><strong>SPE </strong></a><strong>procedure is lower than expected.</strong></p><p>The key objective of troubleshooting is not simply to identify that recovery is low, but to determine exactly where the analyte was lost during the extraction process. Once the point of loss has been identified, corrective actions can be implemented systematically.</p><h3><strong>Fundamental Principle of SPE Recovery Troubleshooting</strong></h3><h4><strong>Determine Where the Analyte Is Going</strong></h4><p>The most important step when troubleshooting low recovery is to identify the location of the missing analyte.</p><p>The process begins with the assumption that the sample originally contained 100% of the target analyte. If the final recovery is lower than expected, some portion of the analyte has been lost during SPE processing.</p><p>To identify the loss point, each fraction generated during the SPE procedure must be collected and analyzed separately.</p><h5><strong>Fractions to Collect</strong></h5><p>During the SPE workflow, the following fractions should be collected individually:</p><ul><li><strong>Load fraction (flow-through)</strong></li><li><strong>Wash fraction(s)</strong></li><li><strong>Elution fraction</strong></li></ul><p>Each collected fraction is transferred into a vial and analyzed using the laboratory’s analytical method.</p><p><strong>The analytical results reveal whether the analyte is:</strong></p><ul><li>Present in the load fraction</li><li>Present in one of the wash fractions</li><li>Present in the elution fraction</li><li>Missing from all collected fractions</li></ul><p>The location of the analyte provides direct information about the root cause of the recovery problem and guides the next troubleshooting steps.</p><h4><strong>Scenario 1: Analyte Detected in the Load Fraction</strong></h4><h5><strong>What It Means</strong></h5><ul><li>If the analyte appears in the load fraction, it was not retained by the SPE sorbent during sample loading.</li><li>Instead of binding to the stationary phase, the analyte passed directly through the cartridge.</li></ul><h5><strong>Possible Causes</strong></h5><ol><li><strong>Incorrect Phase Selection</strong></li></ol><ul><li>The selected SPE sorbent may not be appropriate for the analyte being extracted.</li><li>If the analyte cannot interact effectively with the sorbent chemistry, retention will not occur.</li></ul><ol start="2"><li><strong>Excessively Strong Sample Solvent</strong></li></ol><ul><li>The sample may be dissolved in a solvent that is too strong.</li><li>A strong sample solvent can prevent proper interaction between the analyte and the sorbent, causing breakthrough during loading.</li></ul><ol start="3"><li><strong>Incorrect pH Conditions</strong></li></ol><ul><li>Retention often depends on maintaining the analyte in the correct ionization state.</li><li>If the sample pH is not appropriate, the analyte may not interact correctly with the sorbent and therefore will not be retained.</li></ul><ol start="4"><li><strong>Sorbent Overload</strong></li></ol><ul><li>The SPE cartridge may have received:<ul><li>Too much analyte</li><li>Too much sample matrix</li></ul></li><li>When sorbent capacity is exceeded, analytes can break through the cartridge and appear in the load fraction.</li></ul><h5><strong>Corrective Action</strong></h5><p>When overload is suspected, increasing the amount of sorbent can improve analyte retention and prevent breakthrough.</p><h4><strong>Scenario 2: Analyte Detected in the Wash Fraction</strong></h4><h5><strong>What It Means</strong></h5><p>If the analyte appears in the wash fraction, it was initially retained but subsequently removed during the washing step.</p><h5><strong>Possible Causes</strong></h5><ol><li><strong>Wash Solvent Too Strong</strong></li></ol><ul><li>The most common cause is an overly aggressive wash solvent.</li><li>A wash solution with excessive elution strength can remove the analyte before the intended elution step.</li></ul><ol start="2"><li><strong>Incorrect pH During Washing</strong></li></ol><ul><li>When pH control is required for retention, the same conditions must be maintained throughout the process.</li><li>A pH change during washing may alter analyte retention and cause premature elution.</li></ul><h5><strong>Corrective Action</strong></h5><p><strong>Review:</strong></p><ul><li>Wash solvent composition</li><li>Wash solvent strength</li><li>pH conditions during washing</li></ul><p>Adjustments should ensure that the analyte remains retained until the elution step.</p><h4><strong>Scenario 3: Analyte Missing from All Fractions</strong></h4><h5><strong>What It Means</strong></h5><ul><li>If the analyte is not found in the load fraction, wash fractions, or elution fraction, it is likely still retained on the SPE sorbent.</li><li>In this situation, the analyte has not been effectively eluted from the cartridge.</li></ul><h5><strong>Possible Cause</strong></h5><p><strong>Elution Solvent Not Strong Enough</strong></p><ul><li>The final elution solvent may lack sufficient strength to remove the analyte from the sorbent.</li><li>As a result, the analyte remains bound to the stationary phase and never reaches the collection vial.</li></ul><h4><strong>Corrective Action</strong></h4><ul><li>Increase the strength of the elution solvent during the final SPE elution step.</li><li>A stronger solvent can improve analyte desorption and recovery.</li></ul><h3><strong>Summary of Low Recovery Troubleshooting Strategy</strong></h3><p>The recommended troubleshooting workflow consists of four steps:</p><h4><strong>1. Collect All SPE Fractions</strong></h4><p><strong>Gather:</strong></p><ul><li>Load fraction</li><li>Wash fraction(s)</li><li>Elution fraction</li></ul><h4><strong>2. Analyze Each Fraction Separately</strong></h4><p>Use the analytical method to determine where the analyte is located.</p><h4><strong>3. Identify the Root Cause</strong></h4><div><div><h5><strong>Analyte Location&nbsp;&nbsp;/&nbsp;&nbsp;Likely Cause</strong></h5><ul><li><strong>Load fraction:</strong> Incorrect phase, strong sample solvent, incorrect pH, sorbent overload</li><li><strong>Wash fraction: </strong>Wash solvent too strong, incorrect pH</li><li><strong>Not found in any fraction:</strong> Incomplete elution from sorbent</li></ul></div></div><h4><strong>4. Apply Corrective Measures</strong></h4><p><strong>Modify:</strong></p><ul><li>Sorbent selection</li><li>Sample solvent composition</li><li>pH conditions</li><li>Sorbent amount</li><li>Wash solvent strength</li><li>Elution solvent strength</li></ul><h3><strong>Other Common SPE Issues</strong></h3><p>In addition to low recovery, several other SPE-related problems are commonly encountered.</p><p><strong>These include:</strong></p><ul><li>Contamination</li><li>Reproducibility Problems</li><li>Flow-Related Issues</li></ul><h3><strong>Conclusion</strong></h3><p>Successful troubleshooting of low SPE recovery depends on identifying where the analyte is lost during the extraction process. Collecting and analyzing individual SPE fractions provides a systematic method for locating the analyte and determining the underlying cause of poor recovery.</p><p>Whether the analyte passes through during loading, elutes during washing, or remains bound to the sorbent after extraction, fraction-based investigation enables targeted corrective actions. This structured approach allows SPE methods to be optimized efficiently and helps restore acceptable analyte recovery.</p>

SPE Troubleshooting: Understanding and Resolving Low Recovery in Solid Phase Extraction

<p><strong>New edition of the Wiley Registry of Mass Spectral Data expands compound coverage to over 915,500 reference spectra, strengthening a foundational layer of Wiley’s scientific data and research intelligence portfolio.</strong></p><p>Wiley, a global leader in authoritative content and research intelligence for the advancement of scientific discovery, innovation and learning, today released the <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/887"><strong>Wiley Registry of Mass Spectral Data 2026</strong></a>.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Wiley_Registry_of_Mass_Spectral_Data_2026_bc408d8245.jpg" alt="Wiley: Registry of Mass Spectral Data 2026" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Wiley_Registry_of_Mass_Spectral_Data_2026_bc408d8245.jpg 110w," sizes="100vw" width="1527" height="2162"></p><p>As AI-driven research pipelines become standard practice across pharmaceuticals, materials science and forensic investigation, the quality of reference data underpinning those pipelines determines whether results are trusted—or stall at the verification stage.</p><p>The Wiley Registry of Mass Spectral Data 2026 addresses this issue directly: <strong>One of the world’s largest and most trusted mass spectral reference databases</strong> for identifying unknown chemical compounds, it is now expanded and validated to meet the analytical demands of modern, AI-assisted laboratory workflows.</p><p>Laboratories face increasingly complex analytical challenges—from detecting emerging environmental contaminants to identifying novel substances in forensic investigations. As a result, having access to a comprehensive, rigorously validated spectral database has become foundational to getting results right. It is also a critical validation layer for AI-driven workflows.</p><p>The Wiley Registry database helps scientists and researchers around the world with <strong>environmental testing, forensic investigation, food safety research, drug analysis, defense research, homeland security</strong>, and more, providing critical reference data for identifying and analyzing chemical compounds and materials.</p><p>The new edition represents a significant expansion of the collection, which now contains <strong>more than 915,500 reference spectra</strong>—the unique chemical “signatures” used to identify substances—making it among the most comprehensive databases of its kind. <strong>More than 42,000 new GC-MS spectra</strong> representing <strong>34,100 compounds </strong>have been added, with data from laboratories, world patents and peer-reviewed scientific literature. Each spectrum is validated to the same rigorous standard, ensuring that the data perform reliably whether a researcher is running a manual comparison or feeding it into an automated identification pipeline.</p><p>The Wiley Registry is part of Wiley’s growing portfolio of scientific data and research intelligence solutions, which includes spectral databases, chemistry and materials literature, and analytical tools designed to support researchers and organizations from discovery through to applied outcomes. Wiley spectral database solutions are trusted by the world’s top pharmaceutical companies and many Fortune 500 organizations—reflecting Wiley’s mission to transform knowledge into actionable intelligence, equipping researchers with the rigorous reference data that drives real-world scientific discovery.</p><p><strong>Updated every three years,</strong> the Wiley Registry is among the company’s longest-standing data products, with a history spanning decades of continuous development.</p><p>“<i>The Wiley Registry is a foundational layer of intelligence for any laboratory conducting GC-MS analysis—and increasingly, for the AI-assisted workflows being built around that analysis</i>,” said Armughan Rafat, Wiley senior vice president and chief AI &amp; data analytics officer. “<i>By expanding compound coverage and applying consistent quality measures across the collection, we help analysts provide a deterministic layer to move from unknown to identified faster.</i>”</p><p>Available in the most common instrumentation manufacturer formats, the Wiley Registry of Mass Spectral Data 2026 also offers bundled options to access even more data with its <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/885"><strong>Wiley Registry/NIST</strong></a> and the <strong>KnowItAll GC-MS Library collection</strong> for labs seeking the most comprehensive coverage and workflow integration. The Wiley Registry is also available as a KnowItAll subscription for continued access to new data as they are added to the collection.</p><p>Spectral databases contain detailed “<strong>fingerprints</strong>” of substances captured through analytical techniques such as <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/934"><strong>mass spectrometry (MS)</strong></a> or <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/1271"><strong>Raman spectroscopy</strong></a>, enabling researchers to identify unknown materials by comparing their spectral signatures against validated reference spectra. This data is essential for quality control, research verification and discovery across industries from pharmaceuticals to materials science.</p><blockquote><p>For more information about the Wiley Registry of Mass Spectral Data 2026, please <a target="_blank" rel="noopener noreferrer" href="https://sciencesolutions.wiley.com/solutions/technique/gc-ms/wiley-registry-of-mass-spectral-data/"><strong>visit this website</strong></a>.</p></blockquote><h4><strong>About Wiley</strong></h4><p>Wiley (NYSE: WLY) is a global leader in authoritative content and research intelligence for the advancement of scientific discovery, innovation, and learning. With more than 200 years at the center of the scholarly ecosystem, Wiley combines trusted publishing heritage with AI-powered platforms to transform how knowledge is discovered, accessed, and applied. From individual researchers and students to Fortune 500 R&amp;D teams, Wiley enables the transformation of scientific breakthroughs into real-world impact. From knowledge to impact—Wiley is redefining what's possible in science and learning. Visit us at Wiley.com.</p>

Wiley releases the 2026 edition of the Wiley Registry of Mass Spectral Data to expand GC-MS identification intelligence

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Waters Andrew+ pipetting robot

Andrew+ pipetting robot offers fully automated liquid handling using electronic pipettes and labware holders called Dominos.

<div data-id="7b8f701" data-element_type="widget" data-widget_type="heading.default"><div><h3><strong>Discover lab automation within reach</strong></h3></div></div><div data-id="c1b56fb" data-element_type="widget" data-widget_type="text-editor.default"><div><p><strong>Andrew+ pipetting robot offers fully automated liquid handling using electronic pipettes and labware holders called Dominos. By adding Device+, our ever-expanding portfolio of connected devices and tools for processes such as heating, shaking or labware transportation, Andrew+ evolves into a full walk-away automation solution.</strong></p><p>Creating the connected laboratory, Andrew+ is part of the&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://www.andrewalliance.com/laboratory-software/"><strong>OneLab</strong></a>&nbsp;ecosystem, executing laboratory protocols designed in OneLab.&nbsp; This flexible architecture enables you to effortlessly transition from laborious manual pipetting procedures to error-free, fully-robotized lab workflows – without any knowledge of programming, laboratory robotics or automation engineering.</p><blockquote><p class="cke-user_style-important"><strong>Video: </strong><a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=IGu3YxkkZY0"><strong>Andrew+ Demo</strong></a></p></blockquote><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Andrew_pipetting_robot_4_0569f8609e.jpg" alt="Waters Andrew+ pipetting robot" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Andrew_pipetting_robot_4_0569f8609e.jpg 245w," sizes="100vw" width="1440" height="540"></p><h3><strong>Andrew+ Case Studies&nbsp;</strong></h3><blockquote><p class="cke-user_style-important"><a target="_blank" rel="noopener noreferrer" href="https://www.andrewalliance.com/category/case-studies/"><span>See all case studies</span>&nbsp;</a></p></blockquote><div data-id="ee37b9e" data-element_type="widget" data-widget_type="heading.default"><div><h3><strong>Watch Andrew+ in action</strong></h3></div></div><div data-id="b265a33" data-element_type="widget" data-widget_type="text-editor.default"><div><p>In these videos, our biologists explain how Andrew+ enables users to automate commonly used, laborious, liquid handling for PCR Prep and Plasmid DNA Purification, respectively, whilst ensuring superior repeatability and full traceability.</p><blockquote><p class="cke-user_style-important"><strong>Video: </strong><a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=RnxDri3Z7f4"><strong>PCR Prep</strong></a></p><p class="cke-user_style-important"><strong>Video: </strong><a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=oWOkzqF9X9I"><strong>Plasmid DNA Prep</strong></a></p></blockquote><div data-id="fc9cb9e" data-element_type="column"><div><div data-id="cbb1a9b" data-element_type="widget" data-widget_type="heading.default"><div><h3><strong>Intuitive user interface</strong></h3></div></div><div data-id="3799119" data-element_type="widget" data-widget_type="text-editor.default"><div><div><div><div><div><div><p>Reproducibility and full traceability of sample preparation is assured using a highly intuitive browser-based software environment.&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://www.andrewalliance.com/laboratory-software/"><strong>OneLab</strong></a> enables scientists to graphically design their own pipetting protocols in minutes and execute them straight away in any laboratory in the world, even allowing the remote monitoring of ongoing experiments. Use a flexible and secure platform that withstands the rigors of regulatory validation.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Onelab_design_2_489d32ac68/Waters-Onelab-design-2_l.webp" alt="Waters-Onelab-design-2_l.webp" width="1027" height="488"></p><div data-id="9199ea6" data-element_type="column"><div><div data-id="6db85f8" data-element_type="widget" data-widget_type="heading.default"><div><h3><strong>Widest pipetting volume range</strong></h3></div></div><div data-id="ae0caea" data-element_type="widget" data-widget_type="text-editor.default"><div><p>Andrew+ pipetting robot uses single and multichannel electronic pipettes, ensuring the best liquid handling performance and maximum flexibility. Smart electronic pipettes are manufactured by Sartorius and based upon their acclaimed Picus pipettes.</p><p>Electronic pipettes are optimized for used with the Andrew+ pipetting robot, allowing greater flexibility in the type of liquid handling experiments that can be run, providing superior experiment reproducibility, pipetting speed and a market leading dynamic range of dispensing volumes for a liquid handing robot –from 0.2 µL up to 10 mL.</p><figure class="image"><img style="aspect-ratio:529/382;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Andrew_pipetting_robot_f5ca4f825d.jpg" alt="Waters Andrew+ pipetting robot.jpg" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Andrew_pipetting_robot_f5ca4f825d.jpg 216w," sizes="100vw" width="529" height="382"></figure><div data-id="ed235f6" data-element_type="column"><div><div data-id="ef6b933" data-element_type="widget" data-widget_type="heading.default"><div><h3><strong>Andrew+ is compact</strong></h3></div></div><div data-id="7537e2e" data-element_type="widget" data-widget_type="text-editor.default"><div><div><div><div><div><div><p>The liquid handling robot is designed to fit the majority of laboratory benches and biosafety cabinets (BSC). Andrew+, even with 2 full rows of Dominos&nbsp;<i>(</i>allowing to use 7 microplates or 56 falcon tubes or 168 microtubes) occupies a depth of ~55cm/22”, that fits even the smallest hoods. The unique compact size and design of our liquid handler allows it to work at a temperature of 20°C-37°C.&nbsp;</p><figure class="image"><img style="aspect-ratio:836/556;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Andrew_pipetting_robot_2_fb174b1453.jpg" alt="Waters Andrew+ pipetting robot - 2.jpg" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Andrew_pipetting_robot_2_fb174b1453.jpg 235w," sizes="100vw" width="836" height="556"></figure><div data-id="c9b37a7" data-element_type="widget" data-widget_type="heading.default"><div><h3><strong>Versatile working deck, tools and devices for all your needs</strong></h3></div></div><section data-id="b802f90" data-element_type="section" data-settings="{&quot;jet_parallax_layout_list&quot;:[]}"><div><div data-id="3e689f0" data-element_type="column"><div><div data-id="5dc9372" data-element_type="widget" data-widget_type="text-editor.default"><div><p>The Andrew+ deck layout is quickly adaptable to your experiment materials and are incredibly easy to set with the ever-expanding range of Dominos: a magnetic-based modular solution that enables Andrew+ to use a broad range of consumables.</p></div></div></div></div><div data-id="5626074" data-element_type="column"><div><div data-id="40c6ef1" data-element_type="widget" data-widget_type="text-editor.default"><div><p>In addition to pipetting liquids, the Andrew+ liquid handler can perform a wide range of complex experimental steps such as tube/plate transport or solid-phase extraction using vacuum.<br>Thanks to OneLab, you will benefit to a seamless integration of new capabilities added to your setting.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Andrew_pipetting_robot_3_89b87a0d2e.jpg" alt="Waters Andrew+ pipetting robot - 3.jpg" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Andrew_pipetting_robot_3_89b87a0d2e.jpg 245w," sizes="100vw" width="1734" height="598"></p><div data-id="d090821" data-element_type="column"><div><div data-id="f9d733b" data-element_type="widget" data-widget_type="heading.default"><div><h3><strong>Automated Protocols with Andrew+</strong></h3><p>Specifically optimized for Andrew+, various applications and methods guarantee the delivery of better pipetting accuracy and improved reproducibility.</p><blockquote><ul><li><div><a target="_blank" rel="noopener noreferrer" href="https://onelab.andrewalliance.com/library/sars-cov-2-lc-ms-kit-ruo-9lwrvwkA"><span>Automated preparation of SARS-CoV-2 peptides for LC-MS analysis</span></a></div></li><li><div><a target="_blank" rel="noopener noreferrer" href="https://onelab.andrewalliance.com/library/automated-antibody-purification-jlwKQ0aY"><span>Automated Antibody Purification for higher recovery and reproducibility</span></a></div></li><li><div><a target="_blank" rel="noopener noreferrer" href="https://onelab.andrewalliance.com/app/lab/bl6MQP6z/library/standard-curve-generation-KlwRbwR3"><span>Reliable and Robust Sample Prep for Standard Curve Generation</span></a></div></li></ul><p class="cke-user_style-important"><a target="_blank" rel="noopener noreferrer" href="https://onelab.andrewalliance.com/library"><span><strong>More to discover in the Protocol Library</strong></span></a></p></blockquote><h3><strong>Get an extra pair of hands</strong></h3><div data-id="aa4715f" data-element_type="widget" data-widget_type="heading.default"><div><h4><strong>Reproducibility</strong></h4></div></div><div data-id="a1d2f3b" data-element_type="widget" data-widget_type="text-editor.default"><div><div><div data-animationtype="fadeInDown" data-animationduration="0.7" data-animationoffset="top-into-view"><div><p>Laboratory automation eliminates most human errors resulting in more reliable data and improved productivity. Together with complete integration inside OneLab, all experimental data from Andrew+ will be recorded and stored, improving the traceability of experiments and the data analysis.</p><div data-id="fb36639" data-element_type="widget" data-widget_type="heading.default"><div><h4><strong>Productivity</strong></h4></div></div><div data-id="c5f6abd" data-element_type="widget" data-widget_type="text-editor.default"><div><div><div data-animationtype="fadeInDown" data-animationduration="0.7" data-animationoffset="top-into-view"><div><div><div data-animationtype="fadeInDown" data-animationduration="0.7" data-animationoffset="top-into-view"><div><p>Andrew+ combines the flexibility of single channel pipetting (0.2 μL to 10 mL) with the higher throughput of multichannel pipetting. In addition, Andrew+ reduces the need to repeat experiments due to pipetting errors.</p><div data-id="0a035d7" data-element_type="widget" data-widget_type="heading.default"><div><h4><strong>Promoting health</strong></h4></div></div><div data-id="a72e364" data-element_type="widget" data-widget_type="text-editor.default"><div><div><div data-animationtype="fadeInDown" data-animationduration="0.7" data-animationoffset="top-into-view"><div><div id="applications"><div><div><div><div><div id="icon-area" data-animationoffset="top-into-view"><div><div data-animationtype="fadeInDown" data-animationduration="0.7" data-animationoffset="top-into-view"><div><p>Pipetting requires repetitive movements (of up to 500 times per day for the average user) that can lead to musculo-skeletal disorders like repetitive strain injury. Andrew+ helps eliminates physical stress to professionals, and also reduces the risk of exposure to hazardous materials used in certain experimental procedures.</p></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></section></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>

Waters Oasis SPE products

Waters Oasis SPE products come in a broad range of sorbents and an array of formats. With Oasis products, you can meet a wide variety of sample preparation needs.

<h4><strong>Faster, cleaner, and simpler SPE starts here</strong></h4><p>Analytical chemists worldwide use SPE to remove interfering matrix compounds and enrich the analyte of interest to ensure the generation of high-quality data.</p><p>Waters Oasis SPE products come in a broad range of sorbents and an array of formats. With Oasis products, you can meet a wide variety of sample preparation needs, from simple and fast sample matrix clean-up to more complex sample preparation challenges.</p><p>Oasis SPE products deliver unmatched purity, consistency, and quality for sample analysis. Along with seven different SPE chemistries, Oasis SPE products use universal to customized protocols to handle your unique sample.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Oasis_SPE_kolonky_2_967d461f2e/Waters-Oasis-SPE-kolonky-2.jpg" alt="Waters: Oasis SPE" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Oasis_SPE_kolonky_2_967d461f2e/thumbnail_Waters-Oasis-SPE-kolonky-2.jpg 245w," sizes="100vw" width="950" height="416"></p><h4><strong>Overview</strong></h4><ul><li>Fully water-wettable sorbents increase reproducibility and enable elimination of condition and equilibration steps</li><li>Co-polymer pH stable from 0–14 with no secondary silanol activity</li><li>Optimal sensitivity for small molecule and therapeutic peptide analysis</li><li>Reduced matrix effects for LC-MS/MS analyses</li><li>Unsurpassed selectivity</li><li>Consistent retention and capacity, yielding the highest SPE recovery</li><li>Reduces variability in analytical results and increases robustness of analysis</li><li><strong>Recommended Use: </strong>For the fastest, cleanest, and simplest approach to SPE-LC-MS/MS method development.</li></ul><h4><strong>Solid-Phase Extraction Chemistries</strong></h4><h5><strong>Oasis PRiME HLB</strong></h5><ul><li>Multi-purpose hydrophilic-lipophilic balanced reversed phase sorbent for acids, bases, and neutrals</li><li>Cleaner samples in fewer steps with simple three-and two-step protocols, no SPE expertise required</li><li>Removes 95% of common matrix interferences, such as proteins, salts, phospholipids, and pigments</li><li>No sorbent conditioning or equilibration steps required</li><li>Faster, more predictable analysis time</li><li>Ideal for reversed-phase SPE clean-up of samples in routine analysis.</li></ul><h5><strong>Oasis PRiME MCX</strong></h5><ul><li>Mixed-mode Cation eXchange sorbent to selectively retain, concentrate and elute basic compounds</li><li>Reversed-phase and ion-exchange functionality for orthogonal sample preparation</li><li>Cleaner samples in fewer steps with simple and fast 3 and 4-step protocols</li><li>Removes 99% of phospholipids from complex sample matrices</li><li>No sorbent conditioning or equilibration steps required</li><li>Faster, more predictable analysis time</li><li>Highly reproducible target analyte recoveries</li><li>Ideal for basic compound specificity while removing matrix interferences in a simple clean-up.</li></ul><h5><strong>Oasis HLB</strong></h5><ul><li>Multi-purpose hydrophilic-lipophilic balanced reversed phase sorbent</li><li>Provides high capacity for acids, bases, and neutrals</li><li>Ideal for ultra-high capacity of very polar compounds.</li></ul><h5><strong>Oasis MCX</strong></h5><ul><li>Mixed-mode Cation eXchange sorbent for bases</li><li>Increased analyte specificity and sensitivity</li><li>Reversed-phase and ion-exchange functionality for orthogonal sample preparation</li><li>Ideal for selective retention of basic analytes.</li></ul><h5><strong>Oasis MAX</strong></h5><ul><li>Mixed-mode Anion eXchange for acids</li><li>Increased analyte specificity and sensitivity</li><li>Reversed-phase and ion-exchange functionality for orthogonal sample preparation</li><li>Ideal for selective retention of acidic analytes.</li></ul><h5><strong>Oasis WAX</strong></h5><ul><li>Weak Anion eXchange mixed-mode sorbent for strong acidic compounds</li><li>Increased analyte specificity and sensitivity</li><li>Reversed-phase and ion-exchange functionality for orthogonal sample preparation</li><li>Ideal for improved retention of strong acidic compounds.</li></ul><h5><strong>Oasis WCX</strong></h5><ul><li>Weak Cation eXchange mixed-mode sorbent for strong basic compounds</li><li>Increased analyte specificity and sensitivity</li><li>Reversed-phase and ion-exchange functionality for orthogonal sample preparation</li><li>Ideal for improved retention of all basic analytes, especially strong bases.</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Sorbenty_Oasis_SPE_na_bazi_kopolymeru_Oasis_HLB_c8ffee39b3/Waters-Sorbenty-Oasis-SPE-na-bazi-kopolymeru-Oasis-HLB.png" alt="Waters: Oasis Sorbents" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Sorbenty_Oasis_SPE_na_bazi_kopolymeru_Oasis_HLB_c8ffee39b3/thumbnail_Waters-Sorbenty-Oasis-SPE-na-bazi-kopolymeru-Oasis-HLB.png 211w," sizes="100vw" width="1511" height="1119"></p><h4><strong>Oasis Formats</strong></h4><h5><strong>Oasis μElution Plate</strong></h5><ul><li>Patented μElution plate design</li><li>No evaporation and reconstitution necessary due to elution volumes as low as 25 µL</li><li>Ideal for SPE clean-up and analyte enrichment of small sample volumes</li><li>Compatible with most liquid-handling robotic systems for automated, reliable high-throughput SPE (HT-SPE)</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Corporation_Oasis_m_Elution_Plate_aa7e36a4c1.jpg" alt="Waters: Oasis µElution Plate" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Corporation_Oasis_m_Elution_Plate_aa7e36a4c1.jpg 245w," sizes="100vw" width="502" height="260"></p><h5><strong>Oasis 96-Well Sample Extraction Plates</strong></h5><ul><li>Innovative, award-winning two-stage well design</li><li>High throughput and high recovery</li><li>Compatible with most liquid-handling robotic systems for automated, reliable high-throughput SPE (HT-SPE)</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Corporation_Oasis_96_Well_Sample_Extraction_Plates_9528d532b9.jpg" alt="Waters: Oasis 96-Well Sample Extraction Plates" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Corporation_Oasis_96_Well_Sample_Extraction_Plates_9528d532b9.jpg 245w," sizes="100vw" width="525" height="329"></p><h5><strong>Oasis Syringe-Barrel Cartridges</strong></h5><ul><li>Ultra-clean syringe barrel and frits</li><li>Available in cartridges ranging from 1 cc to 60 cc</li><li>Flangeless syringe-barrel cartridges available in 1 cc, 3 cc, and 6 cc sizes</li><li>Plus-style cartridges with Luer inlet hub and outlet tip, compatible with hand-held syringes</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Corporation_Oasis_Syringe_Barrel_Cartridges_961aa06b8a.jpg" alt="Waters Corporation: Oasis Syringe-Barrel Cartridges" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Corporation_Oasis_Syringe_Barrel_Cartridges_961aa06b8a.jpg 245w," sizes="100vw" width="503" height="311"></p><h5><strong>Oasis Glass Cartridges</strong></h5><ul><li>Ultra-clean glass syringe with Teflon® frit</li><li>For trace level detection and analysis at part-per-trillion (PPT) levels</li><li>Available in 5 cc (200 mg) configuration</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Corporation_Oasis_Glass_Cartridges_5e96319c7f.jpg" alt="Waters: Oasis Glass Cartridges" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Corporation_Oasis_Glass_Cartridges_5e96319c7f.jpg 188w," sizes="100vw" width="409" height="339"></p><h5><strong>Oasis On-Line Columns and Cartridges</strong></h5><ul><li>For rugged, reproducible, and ultra-fast on-line analysis</li><li>Wide choice of configurations, particle sizes, and sorbent chemistries</li><li>Available with all six patented Oasis sorbents—PRiME HLB, HLB, MCX, MAX, WCX, and WAX</li><li>High recovery and reproducible results for a wide range of compounds</li><li>Cartridge format for use with Spark Holland Prospekt-2™/Symbiosis™ systems also available</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Corporation_Oasis_On_Line_Columns_and_Cartridges_ba02114c92.jpg" alt="Waters: Oasis On-Line Columns and Cartridges" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Corporation_Oasis_On_Line_Columns_and_Cartridges_ba02114c92.jpg 168w," sizes="100vw" width="415" height="386"></p><h4><strong>Sample preparation, improved</strong></h4><p>Improving various aspects of chromatography and mass spectrometry analyses often starts with sample preparation. &nbsp;Solid-phase extraction (SPE) or "liquid-solid phase extraction" is a sample preparation technology that uses particles of chromatographic packing material, usually in a cartridge or 96-well plate format, to chemically separate different analytes and aid in removing matrix components in a sample. &nbsp;</p><p>SPE is a proven sample preparation tool for simple sample matrix removal, including common interferences like proteins, salts, fats and phospholipids. This matrix removal provides many benefits, including matrix effect reduction and an increase in sample concentration and analyte specificity. Matrix removal also significantly simplifies chromatographic complexity by reducing the number of interfering peaks in the LC and reducing signal suppression by providing clean samples for the MS.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Corporation_Oasis_SPE_LC_MS_MS_chromatogram_of_1_pgm_L_of_alprazolam_from_rat_plasma_8b7275b25b.jpg" alt="Waters: Oasis SPE - LC-MS-MS chromatogram of 1 pgmL of alprazolam from rat plasma" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Corporation_Oasis_SPE_LC_MS_MS_chromatogram_of_1_pgm_L_of_alprazolam_from_rat_plasma_8b7275b25b.jpg 169w," sizes="100vw" width="1024" height="946"></p><h4><strong>Get the cleanest extracts with the Oasis 2x4 method</strong></h4><p>Having a variety of tools for method development allows separation scientists to optimize protocols for maximum sensitivity and selectivity. The Oasis 2x4 method for SPE sorbent and protocol selection for acids, bases, and neutrals produces the cleanest extracts – all by eliminating matrix interferences and sample variability. Get the flexibility to extract acids, bases, and neutrals with high SPE recoveries while removing matrix components that may interfere with analysis with our two protocols and four sorbents. By following the simple steps outlined in the Oasis 2x4 method, you can achieve high recoveries and the cleanest extracts.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Oasis_2x4_protokol_pro_vyvoj_metody_c417be9006/Waters-Oasis-2x4-protokol-pro-vyvoj-metody.jpg" alt="Waters: Oasis SPE - Oasis 2 x 4 method development protocol." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Oasis_2x4_protokol_pro_vyvoj_metody_c417be9006/thumbnail_Waters-Oasis-2x4-protokol-pro-vyvoj-metody.jpg 242w," sizes="100vw" width="1519" height="979"></p><h4><strong>Isolate your compounds with the Oasis HLB method</strong></h4><p>Solid-phase extraction (SPE) method development starts with knowledge of the sample matrix—the nature and relative concentration of the analytes of interest and potentially interfering endogenous compounds. The right sorbent and solvents are selected for load, wash, and elute steps, resulting in the creation of rugged, reliable, and selective protocols. The Oasis HLB method is a generic protocol used to isolate a broad range of acidic, basic, and neutral compounds from a wide spectrum of matrices.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Corporation_Oasis_SPE_Generic_Method_Protocol_with_Oasis_HLB_SPE_83d684704d.jpg" alt="Waters: Oasis SPE - Generic Method Protocol with Oasis HLB SPE" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Corporation_Oasis_SPE_Generic_Method_Protocol_with_Oasis_HLB_SPE_83d684704d.jpg 139w," sizes="100vw" width="1024" height="1153"></p><h4><strong>Multiple contaminant analysis with the 2-step pass-through protocol</strong></h4><p>If you are doing multiple residue screening of veterinary drugs, pesticides and mycotoxins in various food matrices, you may be facing a high concentration of organic solvents. With our simple 2-step protocol (pass-through SPE), you can remove matrix interferences quickly if your samples contain a high concentration of organic solvent(s) and concentration and/or salt removal is not required. It can be used as the clean-up method following QuEChERS extraction, saving you significant time compared to the traditional dispersive SPE method - all while achieving superior clean-up.</p><p><strong>To do pass-through SPE, Waters offers 2 convenient and flexible formats:</strong></p><ul><li><strong>Traditional-style cartridges</strong> compatible with vacuum and positive pressure manifolds&nbsp;</li><li><strong>"Plus" style cartridges</strong> that can be used without manifolds when connected to a displacement syringe</li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Waters_Oasis_SPE_kolonky_3_b4da6242de/Waters-Oasis-SPE-kolonky-3.jpg" alt="Waters: Oasis Plus Light and Plus Short Cartridges for 2-step pass through protocol." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Waters_Oasis_SPE_kolonky_3_b4da6242de/thumbnail_Waters-Oasis-SPE-kolonky-3.jpg 152w," sizes="100vw" width="1308" height="1342"></p>

Products focused on Sample Preparation from Waters - page 1

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