In the week from January 13, the following webinars await you in the field of gas / solid phase and especially Raman, FTIR, GC and GC/MS.<blockquote><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/webinars">👉 DETAILS AND REGISTRATION IN THE WEBINARS SECTION</a>👉 Search and filter in the largest global database with over 3 500 GC, LC, MS and spectroscopy webinars.</blockquote><h5>1. Shimadzu Corporation: Enhancing Non-Targeted Screening In Challenging Matrices</h5><div><div><ul><li><div>We, 15.1.2025 09:00 CET</div></li><li><div><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/webinar/4570">Registration</a></div></li></ul></div>Don’t miss this opportunity to experience the future of non-targeted screening and explore how GCxGC-TOF MS can elevate your research!</div><h5>2.&nbsp;Agilent Technologies: Agilent 8700 LDIR Workflows</h5><div><div><ul><li><div>Th, 16.1.2025 20:00 CET</div></li><li><div><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/webinar/4637">Registration</a></div></li></ul></div>The two main worklflows of the LDIR will be discussed and demonstrated.</div><h5>3. Agilent Technologies: All About USP 467 Residual Solvent: Regulatory and Application Updates</h5><div><div><ul><li><div>Tu, 21.1.2025 17:00 CET</div></li><li><div><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/webinar/4513">Registration</a></div></li></ul></div>Recent changes in USP 467, latest trends &amp; applications in residual solvent analysis along with analytical workflow in order to get accurate &amp; reproducible results.</div><h5>4. Agilent Technologies: Make Your GC lab more productive with OpenLab CDS</h5><div><div><ul><li><div>We 22.1.2025 10:30 CET</div></li><li><div><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/webinar/4671">Registration</a></div></li></ul></div>The latest variant of OpenLab CDS. OpenLab CDS in sync with GC platform provides latest features familiarization to ensure your lab is productive, efficient and compliant.<div>&nbsp;</div></div><h5>5. Agilent Technologies: Using LDIR for Advanced Microplastics Characterization</h5><div><div><ul><li><div>Th, 23.1.2025 09:00 CET</div></li><li><div><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/webinar/4683">Registration</a></div></li></ul></div>This session will highlight the advanced features of LDIR technology and its critical applications in analyzing microplastics within various matrices.</div><h5>6.&nbsp;Waters Corporation: Empower Tips: Ask Me Anything About Navigating Data Governance - Risk and Vigilant Monitoring</h5><div><div><ul><li><div>Th, 23.1.2025 16:00 CET</div></li><li><div><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/webinar/4550">Registration</a></div></li></ul></div>We will explore critical aspects of data governance and critical thinking, insights and strategies to help navigate the current environment, evolving your approach and modernizing your way of working.</div>

Webinars LabRulezGCMS Week 3/2025

A fast thermal desorption unit for micro thermal desorption tubes, Part I: Development of the system and proof of concept measurements with hyper-fast gas chromatography

Our Library never stops expanding. What are the most recent contributions to LabRulezGCMS Library in the week of 13th January 2025? 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 applications and other documents by Agilent Technologies, Thermo Fisher Scientific, and Shimadzu!<h4>1. Thermo Fisher Scientific: <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/po_7000_mrm_toxicology_asms_2024_wp810_en_agilent_b9f153ff37.pdf">HERAtech Laboratories satisfies growing water-analysis demand and reduces costs using workflow automation</a></h4><ul><li>Case study</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/paper/28639">Full PDF for download</a></li></ul>“Automation is fundamental because thirteen analysts are not enough to cope with our increase in samples. The automated approach we use allows for method consolidation with the analysis of PAHs and pesticides in a single GC run. Additionally, the possibility to perform sample extraction automatically, followed by online GC-MS/MS analysis, offers a significant reduction of labor spent and a significant reduction in solvent consumption.”Dr. Paolo Morelli, Laboratory Manager, HERAtech S.r.l., Sasso Marconi (BO), Italy“It’s necessary to evaluate every possible marginal gain on every single process in the workflow to remove any bottlenecks. The bottleneck that Thermo Fisher Scientific has helped us solve is huge for sample preparation for pesticides and in particular for PAHs by eliminating manual SPE.”Dr. Paolo Morelli, Laboratory Manager, HERAtech S.r.l., Sasso Marconi (BO), Italy<blockquote><h5>Analytical system used at HERAtech for automated determination of pesticides and PAHs in water samples</h5><ul><li>TriPlus RSH SMART autosampler</li><li>Thermo Scientific™ TRACE ™ 1610 Series gas chromatograph with Thermo Scientific™ iConnect™ Programmable Temperature Vaporizing (PTV) injector module for large-volume injection</li><li>Thermo Scientific™ TSQ™ 9610 triple quadrupole mass spectrometer</li></ul></blockquote>“The key aspect of this automated solution is an analytical system capable of carrying out automatically, in a fully unattended way, all the extraction phases of the LLE protocol using microvolumes.”Dr. Paolo Morelli, Laboratory Manager, HERAtech S.r.l., Sasso Marconi (BO), Italy“We made significant investments focused on automation in terms of instruments that allow us to analyze more analytes in one run. In particular, we aimed to consolidate different methods into a single method and provide as many analytical measurements as possible with a single machine. Our goal was simultaneous analysis of 70 analytes including pesticides and PAHs, with quantification limits between 0.0005 μg/L (0.5 ng/L) and 0.02 μg/L.”Dr. Paolo Morelli, Laboratory Manager, HERAtech S.r.l., Sasso Marconi (BO), Italy“Only two solvents are necessary to perform automated DLLME, and the much lower volumes offer significant cost savings. The sample volume required is much lower, reducing logistic costs of transportation and storage.”Dr. Paolo Morelli, Laboratory Manager, HERAtech S.r.l., Sasso Marconi (BO), Italy<h4>2. Agilent Technologies/ASMS: A Triple Quadrupole GC/MS MRM Database for Forensic and Toxicological Workflows</h4><ul><li>Poster</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/paper/27204">Full PDF for download</a></li></ul>Systematic toxicological analysis in forensic investigation demands continuous adaptability to an ever-evolving toxicant landscape.The three main challenges are:<ol><li>low concentrations of the toxicants</li><li>an ever-growing number of analytes to be monitored and quantitated</li><li>the limitations in obtaining analytical standards for every chemical.</li></ol>For the volatile compounds, gas chromatography/mass spectrometry (GC/MS) is the method of choice when analyzing forensic drugs and toxicants [1, 2]. GC/MS forensic toxicological workflow greatly benefits from selectivity and sensitivity of multiple reaction monitoring (MRM) approach enabled with triple quadrupole GC/MS (GC/TQ).The aim of this work was to develop an MRM database to help toxicological researchers build screening and quantitation methods simplifying method development.The database of MRM transitions for relevant toxicants was established and successfully applied to creating GC/TQ methods for analyzing real-world authentic samples with greater sensitivity and confidence than the conventional GC/MS approach. The database will be available for download starting July 2024.<h4>3. Shimadzu: GC/GC-MS Glass Insert/Liner Selection Guide</h4><ul><li>Guide</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/paper/26962">Full PDF for download</a></li></ul>In a gas chromatograph, the sample is injected into the column via the injection unit. A glass insert / liner is used to vaporize the sample more efficiently, and to inject the vaporized sample into the column with no unnecessary dispersion. Additionally, using a glass insert reduces the extent to which contaminants such as high boiling point compounds from the sample contaminate the injection unit. Accordingly, selecting a glass insert appropriate for the objective heightens the accuracy of analysis and leads to more reliable results.When selecting a glass insert, various selection standards are used depending on the application. For example, the following cases can be cited as selection standards for glass inserts.&nbsp;<ul><li>What type of injection unit is used? What sample injection method is used during analysis?</li><li>Is the glass insert filled with wool (glass wool)? What shape is the glass insert?</li><li>What are the dimensions of the glass insert?</li><li>Is surface treatment of the glass insert necessary?</li></ul>Glass inserts with a variety of specifications are commercially available to suit these varied selection criteria, so selecting a glass insert can be daunting.This selection guide describes how to select an appropriate glass insert for the objective/application as well as points to consider in accordance with elements of the glass insert configuration. Additionally, this guide introduces glass inserts appropriate for your Shimadzu GC system.

News from LabRulezGCMS Library - Week 3, 2025

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Wasson GC O-FID Oxygenated Components in Gasoline Analyzer

Using an Agilent Technologies 8890 with custom Wasson-ECE hardware, this instrument rapidly determines oxygenate components in motor fuels.

Approved for determining oxygenates in gasoline and other motor fuels by ASTM D5599 and EN 1601
The determination of oxygenates in motor fuels is an important mandate of the reformulated fuels program. To meet this goal, the United States Environmental Protection Agency approved the use of Oxygenate Flame Ionization Detector (O-FID) analysis in preference to other analyses currently used by the fuels industry.
<h5>Oxygen Selectivity</h5>
Using an Agilent Technologies 8890 GC with custom Wasson-ECE hardware, this instrument rapidly determines oxygenate components in motor fuels. A single injection is introduced onto a capillary column which separates oxygenate components in boiling point order. A cracking reactor converts hydrocarbons into elemental carbon, and oxygenated compounds into carbon monoxide. A methanizer then further converts the carbon monoxide into methane before eluting to the FID detector.
Because hydrocarbons never make it to the detector, this method completely eliminates problems with hydrocarbon interferences.
<h5>Single GC 8890 Instrument Configurations:</h5>
<ul>
<li>ASTM D5599 or EN1601 - Oxygenates in gasoline and other motor fuels by O-FID.
</li>
<li>O-FID with D3606 - Oxygenates by O-FID per ASTM D5599 and benzene and toluene in motor fuels by FID per ASTM D3606
</li>
<li>O-FID with D4815 - Oxygenates by O-FID per ASTM D5599 and oxygenates by FID per ASTM D4815
</li>
<li>O-FID with D4815 and D3606 - Oxygenates by O-FID per ASTM D5599, oxygenates by FID per D4815, and benzene and toluene by FID per ASTM D3606
</li>
</ul>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Altium_International_Wasson_O_FID_GC_analyzator_kyslikatych_latek_Ukazkovy_chromatogram_z_O_FI_Du_32e439263e.jpg" alt="Wasson: Example chromatogram from O-FID GC system"/>
<h5>Simple to Use and Operate</h5>
The Wasson-ECE O-FID has been engineered to provide long life and require infrequent service. When replacement of the cracking reactor or methanizer is necessary, the task can be accomplished in under one hour, including instrument equilibration time.
<h5>Precise Analyses</h5>
Repeatibility tests yield relative standard deviations (RSD) of approximately 1% by weight over a series of 10 runs for all major oxygenated components. The O-FID response is linear over four orders of magnitude. An automated injection device is recommended to provide the most reliable means of repeatable injection.
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Altium_International_Wasson_O_FID_GC_analyzator_kyslikatych_latek_Opakovatelnost_mereni_51c93d3988.jpg" alt="Wasson: GC O-FID Oxygenated Components in Gasoline Analyzer - Repeatibility tests"/>

Wasson-ECE GC RGA Refinery Gas Analyzers

Wasson-ECE Refinery Gas Analyzers (RGA) are an integral part of any HPI lab. 

Wasson-ECE Refinery Gas Analyzers (RGA) are an integral part of any HPI lab. These instruments often carry the heaviest sample loads because of the critical information they provide. RGAs provide valuable information regarding plant operation, unit optimization, and quality control. Our RGA systems are designed for flexibility while maintaining the accurate and repeatable results our clients have come to expect.
As a premier channel partner of Agilent Technologies, Wasson-ECE extends the capabilities of the 8890 Gas Chromatograph to meet key requirements of refinery gas analysis. The Wasson-ECE RGA incorporates our specially designed auxiliary oven, which holds up to five additional rotary valves and six columns, extending the analysis capabilities far beyond traditional methods.
At Wasson-ECE we strive to produce a product that is innovative and state-of-the-art to help our customers overcome their analytical challenges. The flexibility of our RGA systems can ease bench space issues by combining analyses into a single instrument while maintaining an easy to service system with minimal downtime.
<h3>RGA Features</h3>
<ul>
<li>Complete range of analyzers for refinery and other petroleum gases and liquids
</li>
<li>vIncludes method development, selection of valves, and columns** in all configurations
</li>
<li>Dual TCDs and a single FID for the simultaneous analysis of fixed gases and hydrocarbons
</li>
<li>Wasson-ECE Auxiliary Oven which provides a second thermal zone
</li>
<li>Customized reports including calculations for mole %, weight %, or volume %, and calorific value available
</li>
<li>Optional liquid sampling valves or On-board Vaporizer expands the analytical capabilities to liquefied gases
</li>
<li>Optional fourth detector available on all Super RGA configurations
</li>
</ul>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Altium_International_Wasson_RGA_GC_analyzator_rafinerskych_plynu_Wasson_ECE_Moznosti_konfigurace_RGA_17545e3d4c.jpg" alt="Wasson: Wasson-ECE RGA Configuration Options"/>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Altium_International_Wasson_RGA_GC_analyzator_rafinerskych_plynu_Ukazkovy_chromatogram_standardni_RGA_1b72a88528.jpg" alt="Wasson: 383-Standard Refinery Gas Analysis"/>
<h3>Wasson-ECE Super RGA</h3>
Wasson-ECE has the unique ability to add a fourth detector to the GC, building our Super RGA series of analyzers. The additional detector expands the analytical capabilities of the standard RGA to accommodate applications such as sulfurs, oxygenates, heavy hydrocarbons, and trace CO/CO₂. This increased flexibility in configurations can reduce the number of GC’s used in a lab, saving clients valuable bench space and time.
<h5>Performance Guarantee</h5>
From hardware to analysis we stand behind our quoted application. Prior to shipping the instrument, chromatograms are submitted for customer approval. Performance is guaranteed to the clients actual sample, not just a generic standard. Any problems with the application during the first year are covered under warranty for an unparalleled performance guarantee.
<h3>The Wasson-ECE Turn-key Process</h3>
<h5>Sales</h5>
<ul>
<li>Application designed to customer&#39;s requirements</li>
</ul>
<h5>Factory Application</h5>
<ul>
<li>Method development and application setup</li>
<li>Customer samples are run to verify performance</li>
<li>Chromatograms are sent for client approval</li>
<li>Factory acceptance training if desired</li>
</ul>
<h5>Installation</h5>
<ul>
<li>Experienced Wasson Field Service Technician</li>
<li>Analysis of client’s real world samples</li>
<li>Calibration and familiarization</li>
</ul>
<h5>Customer Satisfaction</h5>
<ul>
<li>Follow up after installation</li>
<li>Knowledgeable and responsive service team</li>
<li>Optional preventative maintenance visits or service contracts</li>
</ul>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Altium_International_Wasson_RGA_GC_analyzator_rafinerskych_plynu_Ukazkove_chromatogramy_Super_RGA_c62a4d715e.jpg" alt="Wasson: Example chromatograms (Super RGA)"/>

Wasson GC DHA Hydrocarbon Expert software

DHA analysis easy and simple. Efficient analysis is now even more efficient. Hydrocarbon Expert software.

Wasson-ECE Dragon DHA is a fast, easy to use application for the detailed hydrocarbon analysis of petroleum products by high efficiency gas chromatography. Dragon DHA uses a convenient, graphical interface to provide a one-screen display for visually observing the chromatogram and manipulating the data calculations in order to obtain the optimum results for analysis and data presentation.
<h3>Dragon DHA Includes:</h3>
<ul>
<li>Quick database creation.
</li>
<li>Fast peak identification and results processing.
</li>
<li>“Unknown” tab lists unidentified peaks in order of concentration.
</li>
<li>“Unknown indexer” takes the user directly to the unknown peak for identification.
</li>
<li>Unique dashboard feature continuously presents the user with all calculated results and instantly recalculates when changes are made.
</li>
<li>Hydrocarbon group-type filtering.
</li>
<li>Full preview and printing of reports.
</li>
<li>Results are bound with chromatographic data for instant retrieval and archiving. 
</li>
<li>Original files and data are never affected (CFR Part 11/ISO 17025).
</li>
<li>Result files are saved as netCDF (.AIA) format files and can be accessed by any third-party application that supports reading .AIA file format.
</li>
<li>Result files work as fully functional reference databases.
</li>
<li>Full reports are stored with results for easy retrieval without reprocessing.
</li>
</ul>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Altium_International_Wasson_Obrazek_1_Diagram_casti_DHA_chromatogramu_s_identifikovanymi_a_neidentifikovanymi_piky_b50386d9b9.jpg" alt="Wasson: Diagram of the part of the DHA chromatogram with identified and unidentified peaks. Hydrocarbon Expert greatly simplifies the identification of components by comparing the measured chromatogram with a reference."/>
<h3>Wasson-ECE Dragon DHA Software</h3>
Wasson-ECE Instrumentation Dragon DHA software uses integrated chromatographic data from commercial GC data systems, i.e. ChromPerfect, EZ Chrome, ChemStation. In fact, any GC data system capable of AIA (ANDI) file output is compatible with Dragon DHA.
<h3>Chemical and Physical Property Calculations</h3>
<ul>
<li>Vapor pressure</li>
<li>Oxygenate content</li>
<li>Relative density</li>
<li>Average molecular weight</li>
<li>Calculated research octane number</li>
<li>% carbon, % hydrogen</li>
<li>Calculated bromine number</li>
<li>Mass% and vol% multi-substituted ring aromatics</li>
<li>Total boiling point distribution</li>
<li>Wt%, vol%, mole% of group types by carbon number</li>
<li>Wt%, vol%, mole% of individual components</li>
</ul>
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Altium_International_Wasson_Obrazek_5_V_software_lze_porovnavat_neomezeny_pocet_signalu_a_reportu_Srovnani_lze_provest_na_jakekoli_urovni_od_shrnuti_dle_skupin_po_vlastni_vypocty_9c06f36d16.jpg" alt="Wasson: An unlimited number of signals and reports can be compared in the software. Comparisons can be made at any level, from group summaries to custom calculations."/>

Wasson Pressurized Liquid Auto-sampler (LS100B)

Wasson-ECE Liquid Auto-Sampler (LS100B) offers laboratory automation for pressurized liquid samples such as liquefied petroleum gas (LPG) and natural gas liquids (NGL).

Wasson-ECE Liquid Auto-Sampler (LS100B) offers laboratory automation for pressurized liquid samples such as liquefied petroleum gas (LPG) and natural gas liquids (NGL).
The LS100B uses inert gases to maintain pressure so that the sample remains in the liquid state at ambient temperature as it passes to the GC for analysis.
The LS100B accommodates up to nine sample cylinders with 1/4 inch tube, VCO, or quick connect fittings. These fittings hold the sample cylinders vertically, ensuring that samples are drawn from the bottom of the cylinder.
<h4>Pressurized Liquid Auto-sampler Features</h4>
<ul>
<li>Purges automatically with carrier gas between each sample run
</li>
<li>Remote-starts the GC and the data recording software such as ChemStation™
</li>
<li>Adds a date/time stamp to all samples
</li>
<li>Holds up to nine 3.5 inch / 8.9 cm diameter sample cylinders
</li>
<li>Works with standard open or floating-piston sample cylinders
</li>
<li>Pauses automatically when it detects that the GC is not running or not ready
</li>
<li>Can interrupt the scheduled sample sequence to process a priority sample
</li>
</ul>

Wasson Dynamic Blender for GC (DB302)

The Dynamic Blender is a portable gas blending device that dilutes a sample or a certified standard with a matrix gas of choice.

Gas chromatography (GC) analyses often include trace level detection of components requiring samples or standards at low concentrations. Some analytes are expensive or difficult to purchase at low levels due to reactivity, adsorption, or high molecular weight. Analyses may also cover a wide concentration range, requiring multi-point calibration.
The Wasson-ECE Dynamic Blender (DB302) provides a simple solution to these calibration needs. The Dynamic Blender is a portable gas blending device that dilutes a sample or a certified standard with a matrix gas of choice. One certified standard with concentrations at the upper limit of the desired calibration curve can be diluted to a lower level (&gt;2 orders of magnitude lower) to create a full calibration curve.
An inert flow path and heated bridge eliminate adsorption and condensation problems when blending gas standards that include sulfur, nitrogen, and other reactive compounds.
An on-board flow controller allows the diluent gas flow to be controlled digitally and samples are fed directly to a gas chromatograph. The Dynamic Blender eliminates the need to purchase and store multiple gas cylinders and provides an easy, cost-effective solution for gas phase calibration needs.
<h4>Dynamic Blender Features</h4>
<ul>
<li>Approximately 100 pre-programmed pure diluent gases and mixtures and twenty user configurable diluent mixture slots.
</li>
<li>Maximum Diluent Pressure of 100 psi (leak tested to this pressure)
</li>
<li>Maximum Temperature of 150°C (operation verified at this temp.)
</li>
<li>Mass Flow Controller Range of 10 – 500 cc/min
</li>
<li>7 μm in-line gas filters (treated) are also provided
</li>
<li>Specially passivated tubing for trace reactive compounds (sulfurs, oxygenates, etc.)
</li>
</ul>
*This treatment is not suitable for samples with pH &gt; 8.0, so please notify your sales representative if you have high pH samples.

Wasson Variable Pressure Sampler (VPS)

The Variable Pressure Sampler (VPS) works in two ways to ensure the precision and accuracy of gas results.

The Variable Pressure Sampler (VPS) works in two ways to ensure the precision and accuracy of gas results. The first method is pressure correction, used to create uniform pressure among all injected samples and the calibration blend. The second method is multi-point calibration, which can deliver a calibration blend to the GC at various pressures.
The VPS pressure correction system performs a multi-step process that ensures samples and calibration blends are at uniform pressures when they are injected.
First, when the calibration blend is run through the GC, the VPS measures and stores the pressure of the calibration blend at the time of injection. Then, as each sample is injected at the stored pressure, the VPS adjusts the pressure of the sample to match the pressure of the calibration blend.
The inject pressure of the sample is reported to Agilent Technologies OpenLAB ChemStation software so calculations and quality control operations can be performed.
Using the VPS, calibration samples can be run at various pressures from a single standard. This decreases overall lab costs while ensuring greater accuracy in results. The multi-point calibration function allows testing for signal linearity at different pressures. With this feature, the user can easily pinpoint the range of pressures which generates the most accurate and meaningful results from the calibration standard.
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Wassson_Variable_Pressure_Sampler_VPS_linearity_77314725d6.jpg" alt="Wassson: Variable Pressure Sampler (VPS) - linearity"/>

Wasson LPG Vaporizer (1107)

The LPG Vaporizer uses an innovative, proprietary technique to vaporize liquid samples for injection in an existing GC system.

The LPG Vaporizer uses an innovative, proprietary technique to vaporize liquid samples for injection in an existing GC system. This convenient laboratory system offers flexibility and accuracy for both gas and liquid samples.
The LPG Vaporizer is more convenient than a typical liquid sample valve with more accurate results. All liquid samples are vaporized and run at a constant pressure, eliminating sample density changes that cause errors in liquid phase samples. This ensures sharp, easy-to-read peaks for all samples.
The LPG Vaporizer is built with specially passivated parts for analyzing trace reactive analytes such as sulfurs and oxygenates.
Wasson-ECE&#39;s unique, proprietary vaporization technique produces an even and accurate gas sample. Other vaporizers use tubing with a large volume, causing samples to fractionate when vaporized. This can lead to incomplete sample analysis. The LPG Vaporizer controls the injection volume so that all elements in the liquid sample are vaporized and sent to the GC simultaneously, producing a complete and accurate analysis of the sample.
<h4>LPG Vaporizer Features</h4>
<ul>
<li>Inject liquid and gas samples with a single valve
</li>
<li>High sample throughput
</li>
<li>Purging technique reduces cross-contamination
</li>
<li>Ability to stop sample flow to the GC at any time
</li>
<li>Controlled injection volume
</li>
<li>4 ft. heated bridge from vaporizer to customer&#39;s GC sample valve to prevent sample re-condensing
</li>
</ul>

Wasson Gas Auto-sampler (AS202)

The Gas Auto-sampler (AS202) is a stand-alone device that delivers samples to the GC through a heated bridge, ensuring that samples are injected at the appropriate temperature.

The Gas Auto-sampler (AS202) is a stand-alone device that delivers samples to the GC through a heated bridge, ensuring that samples are injected at the appropriate temperature. The heated pathway is purged with carrier gas between each sample injection, and a vacuum pump ensures an extremely low level of matrix cross-contamination (typically less than 50 ppm).
Samples are loaded into the AS202 oven, which can hold up to twelve 500cc sample cylinders or nine 1L cylinders. The shelves are removable and adjustable and can also be tilted to prevent injection of any residual liquids which then changes the setup to allow for a maximum of eight 500cc or six 1L cylinders.
Samples (1000 psig / 6895 kPa max) are automatically regulated during the purging sequence so the GC injects all samples and calibration blends at atmospheric pressure. The AS202 can also be configured to automate injection of samples that are already at atmospheric pressure.
The table below compares the GC analysis results for 2 mL samples of n-pentane and n-hexane at 100 psig in propane. In the first trial, the sample is sent to the GC from the AS202 at ambient temperature; in the second trial the AS202 heats the samples to 130°C before injection.
<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Wasson_Wasson_autosampler_pro_plynne_vzorky_Srovnani_vysledku_GC_analyz_f7c0ad0991.jpg" alt="Wasson: Repeatability Comparisons - Heated vs. Unheated"/>

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