Multi-Mode Source Ionization System withing LECO Pegasus GC-HRT+ | LECO

Multi-Mode Source™ - Ionization Source for Gas Chromatography Mass Spectrometry


The innovative Multi-Mode Source™ (MMS™) takes all of the advantages of the three most common ionization modes—Electron Ionization (EI), Positive Chemical Ionization (PCI), and Negative Chemical Ionization (NCI/ECNI)—and combines them into one easy-to-use source. No more hardware switching, no more alignment issues: with the MMS, changing ionization modes is as easy as a click of a button.

The new MMS has great mass accuracy and high resolution on pseudo-molecular ions, which complements the traditional Electron Ionization Source (HR-EI) to provide the comprehensive characterization of unknowns. By not touching the hardware, peaks stay aligned between the ionization modes. Each of the three modes is avaible for GC-MS and GCxGC-MS analyses on both the Pegasus® GC-HRT+ and the Pegasus GC-HRT+ 4D.

Don’t limit yourself to just one approach. Ask about the new MMS to see what you’ve been missing!


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LECO Multi-Mode Source Mechanic

ChromaTOF® Tile | Analytical Software | Rapid Analysis | LECO

ChromaTOF® Tile Analytical Software


The volume of GCxGC data can quickly become overwhelming. Multiple tables of thousands of analytes can require months of data mining at a pixel level to find the minute differences between data sets, and even those results are plagued with false positives from normal chromatographic variation.

ChromaTOF Tile revolutionizes how GCxGC data is analyzed. This software compares GCxGC data files quickly and easily. Statistically significant differences rise to the top so you can spend less time finding the differences and more time finding out what they mean.

"ChromaTOF Tile is an enabling technology that has reduced our peak picking time from 10 days to 10 minutes. We are now comparing groups of peak-rich samples from complex studies that would have previously required complicated, custom-built solutions."

Designed for Sample Group Differentiation

Optional heatmap tables are incorporated throughout the interface to give instant feedback on relative intensities. ChromaTOF Tile finds differences between two or more classes of samples, such as: biomarkers distinguishing healthy from not; off-odor detection in food samples that passed or failed quality control; water samples up- and down-stream from an outflow source; petroleum samples from various geographical origins; and anything else you can imagine.

  • ChromaTOF Tile is a separate, stand-alone product to be used in conjunction with ChromaTOF® brand software.
  • All of the tables and plots throughout the interface are exportable for more efficient reporting and to allow you to do more with your data.
  • Clean library-searchable spectra is generated from the tiling process.
  • Areas of the tiles are used to approximately quantify trends across the samples.

The Problem: Comparing sets of chromatograms can be a tedious and lengthy process. With the need to compensate for chromatographic misalignment and count thousands of analytes, even automatic sample identification could take days, weeks, or even months. Our customers asked us to help provide a way to expedite data analysis.

The Solution: Utilizing customer data – real samples – we set out to find a solution. In consultation with Dr. Robert Synovec, we found that if we utilized Fisher Ratios, we could partition the data into a set of regions (‘tiles’) and compare the regionalized (‘tiled’) data, rather than each individual pixel.

ChromaTOF Tile GCxGC-TOF MS Analysis Software Heatmap Software Interface

After essentially averaging the values in a region, our ChromaTOF Tile software compares two corresponding regions to assess the value of difference between these regions. Presented in a graphical means, the software provides users with indicators of low-to-high variance among regions.

These graphic heatmaps quickly and easily draw users’ eyes to areas of high variance, or high interest, reducing the time you spend looking for data outliers. Visually, you can see where the differences are and know what data you should be looking at for your comparisons.

ChromaTOF Tile GCxGC-TOF MS Analysis Software Heatmap Software Interface

 

ChromaTOF Tile does not change the data that is supplied. By comparing tiles instead of pixels, the system can reduce alignment shift flags to better show only the significant differences between the data sets.

 

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"My research group and I at the University of Washington in Seattle are delighted to see our research come to fruition in the release of ChromaTOF Tile. We anticipate that the GCxGC users community will benefit greatly from this discovery-based data analysis tool to address the many challenges stemming from the supervised analysis of complex data sets."

Robert E. Synovec, Professor of Chemistry, University of Washington

“With state-of-the-art analytical methods like comprehensive 2D GC-TOF MS it is simple to generate lots of data, but it is only with the ChromaTOF Tile software that we can translate these into meaningful information and knowledge.

Hans-Gerd Janssen, Science Leader Unilever Research, Professor Recognition-based Analytic Chemistry, Wageningen University & Research; and Ed Rosing, Analytical Flavour Scientist, Unilever R&D

“In aerosol science we are commonly interested in the differences between several sets of samples to e.g. compare different sources or atmospheric aging regimes. For this, ChromaTOF Tile has quickly proven to be a very convenient and straight-forward tool for the evaluation of complex GCxGC data.”

Elena Hartner, PhD Student, Joint Mass Spectrometry Centre, University Rostock and Helmholtz Zentrum München

“When conducting biomarker discovery studies, biases in your data (e.g., batch effects) can send you down the wrong path. The PCA capabilities of ChromaTOF Tile are a quick and powerful way to see the structure of your data, including inherent biases that they possess. This gives users the opportunity to correct for those biases before or after statistical analyses, making putative biomarkers more robust.”

Heather D. Bean, Assistant Professor School of Life Science, Arizona State University

GCxGC-ECD/FID | Comprehensive Two-Dimensional Gas Chromatography | LECO

QuadJet™ SD
Comprehensive Two-Dimensional Gas Chromatography


LECO's QuadJet™ SD is the ideal solution for samples which arrive in your lab. By combining the sensitivity of Flame Ionization Detection (FID) with the increased chromatographic resolution of comprehensive two-dimensional gas chromatography (GCxGC), the QuadJet SD delivers a better measure of the actual components of your sample than a straight GC analysis. No other system available on the market can deliver the same reduction in noise and error as the QuadJet SD.
 

 

Features

  • Enhanced separating power for complex sample analysis
  • Easy-to-use ChromaTOF®-based software provides acquisition processing and reporting funtionality within a single package
  • Classification software feature simplifies component identification
  • Available Cryogen-free modulator eliminates the need for LN2 dewars 

When performing GC-FID analysis, most laboratories quantify compounds using the area of the FID signal. Real world samples are rarely clean and straightforward. For example, a diesel sample can have thousands of different compounds in a single injection. The more compounds in a sample, the higher the chance of coelution; this coelution will increase the FID signal, thus creating a high bias error in the measurement. With GCxGC performing two separate chromatographic separations in one experiment, the accuracy of the FID measurement is maintained.

Due to the orthogonal nature of the separation mechanism in GCxGC, coeluting compounds are easily pulled apart in a single run. True GCxGC instruments, such as the LECO QuadJet SD, improve upon simply running the same sample through two different columns by incorporating a modulation device. Peaks eluting from the primary column are quantitatively segmented into smaller sections prior to release onto the second column. This segmenting, along with the cryo-focusing of the modulator, can deliver peak widths as narrow as 50 ms to the second column.

Thermal Modulation

There is no better-performing modulator for GCxGC than thermal modulation, and not even other thermal modulators can match up to the ruggedness, reliability, and performance of LECO's GCxGC modulator. With LECO's QuadJet SD, modulation is accomplished via a dual-stage, quad-jet thermal modulator positioned between the two columns. LECO's thermal modulator allows for on-column cryo-focusing within the GCxGC system, providing increased peak detectability and increased separation of coeluting compounds for an order-of-magnitude increase in signal-to-noise.

LECO's Consumable-Free Modulator (which does not utilize Liquid Nitrogen) is an available option, saving time and money without sacrificing performance when modulating moderately volatile compounds.

LECO's QuadJet SD is designed to give you the upper hand in laboratory productivity. Its ease-of-use and industry's best secondary oven for the secondary column allows for improved analytical results. When you take the step to the next dimension in gas chromatography, make sure you're taking the step that will let you see what you've been missing.

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QuadJet™ SD Details

GC×GC ECD/FID

  • Models
    1. QuadJet™ SD with LN2 Cooled Thermal Modulator

    1. QuadJet™ SD with Consumable-Free Modulator

Wednesday, 02 December 2020 15:43

ChromaTOF® | Identification Grading System | LECO

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ChromaTOF® IGS | Identification Grading System | LECO

ChromaTOF® Identification Grading System


Bring the Power of Accurate Mass and Confidence to your Identification Problems

LECO's Identification Grading System (IGS) eases data review by allowing users to quickly see, justify, have confidence in, and report on which chemicals are in a particular sample. This in turn allows a user to make confident decisions on what to do next.

Start Knowing What is in Your Sample

The IGS uses all the available chemical information generated from the Pegasus® GC-HRT+ 4D to add confidence to your unknown unknown identification process.

The IGS gives a grade to a particular identification based on 4 criteria:

  1. Presence and accurate mass of a molecular ion
  2. Presence and good correlation of a spectral similarity score from a curated library
  3. Accurate masses of sensible potential formulae of fragmented ions corresponding to a spectral library hit
  4. Matching retention index from the library hit

The higher the value of the grade, the more confident you can be in your identification.

The true power of identification can only be realized with the combined power of GCxGC and high resolution time-of-flight mass spectrometry (TOFMS).

  • GCxGC separates coeluting species and gives cleaner mass spectra than other techniques.
  • TOFMS enables unskewed mass spectra across a chromatographic peak even across very narrow second dimensional peak; which, when combined with deconvolution, yields the highest quality spectra that you can generate.

Born out of the United States of America Environmental Protection Agency (EPA)’s Non-Targeted Analysis Collaborative Trial (ENTACT), the IGS is LECO’s solution to the time-intensive process of data review.

Take for example the unfiltered deconvolution results from a GCxGC-TOFMS analysis of a sample from the EPA's ENTACT project (below, left). By applying the IGS filter, we can quickly view only the most confident indentifications. This simplification is dramatic and enables you to immediately begin investigating the "unknown unknowns," as indicated by the arrows in the diagram image on the right.

ChromaTOF IGS Sample Example

Left: Initial HRD (n=4800). Right: IGS > 2 (n=245)

Of the known compounds entered into the sample from this particular example (which was provided to LECO as a blind sample), IGS identified approximately 80% of the known peaks. The combination of GCxGC and high resolution TOF was proven to be necessary for this confidence. Read "Identifying Small Molecules via High Resolution Mass Spectrometry" for more information.

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Wednesday, 24 April 2019 15:37

Chemical Ionization Source | LECO

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Chemical Ionization Source | LECO

Chemical Ionization Source


Save time and effort in your laboratory by easily identifying unknowns and having more confidence in your library hits. The chemical ionization (HR-CI) source for the Pegasus GC-HRT+ allows users to dramatically change their high resolution GC/MS information with never before seen mass accuracy and resolution on pseudo-molecular ions. The Pegasus GC-HRT+ is available with both electron ionization (EI) and chemical ionization (CI) sources, providing the option of comparison with classic library spectra (EI), and preservation of the molecular ion (CI). Together, the HR-CI source and the Pegasus GC-HRT+ provide a complete package for high-throughput/high-information content analysis, with resolution up to 50,000 FWHM, mass accuracies less than 1 ppm, and acquisition rates up to 200 spectra/second—all with high-integrity isotopic abundance measurements to facilitate rich information content and high-confidence analyte identification. Click here to learn more.

Click here to view our Technical Brief on Mass Accuracy

LECO’S ACCURATE MASS LIBRARY

Do you want to have the ultimate confidence in your library hit? LECO’s AML allows you to compare accurate mass new sample data against an accurate mass library data set. The AML rank provides a similarity score that uses accurate mass sample data the way it should be used. Click here to learn more.


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Wednesday, 20 February 2019 16:11

QUADJET™ Thermal Modulator | LECO

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QUADJET™ Thermal Modulator | LECO

QUADJET™ Thermal Modulator


Thermal modulation delivers the highest performance of any available modulator for GCxGC. Other types of thermal or valve-based modulators do not match up to the ruggedness, reliability, and performance of LECO's GCxGC modulator. With LECO's GCxGC system, modulation is accomplished via a dual-stage, quad-jet thermal modulator positioned between the two columns. LECO's thermal modulator allows for on-column cryo-focusing within the GCxGC system, providing increased peak detectability and increased separation of coeluting compounds.

 

Thermal Modulation Without the Hassle of Liquid Nitrogen

With LECO's Consumable-Free Modulator you can now choose the compound volatility range you need to modulate. If your application requires you to modulate at extreme high volatility, the traditional LN cooled modulator is recommended. However, if your method requires you to modulate moderately volatile compounds, the consumable-free modulator will save you time and money without sacrificing performance.


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Wednesday, 20 February 2019 16:03

FLUX™ | GCxGC Flow Modulator | LECO

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FLUX™ | GCxGC Flow Modulator | LECO

FLUX™
GC×GC Flow Modulator


Our innovative FLUX GC×GC flow modulator was designed with one goal in mind—to make GC×GC more routine, accessible, and easier for you. The flow modulator's concept is based on the sound and easily understood principles first articulated by Seeley et al. on diverting flow. This extraordinarily simple design comprising of a cross shape and a sideways T, is not only easy to setup and get started, but its ease-of-use makes it the most cost-effective option for GC×GC analysis.

This flow-based modulator is perfect for those who want to perform robust GC×GC analysis, but who don't need the sensitivity of standard quad jet thermal modulation. Ideal samples should be complex, but relatively concentrated. Appropriate applications include petroleum and fragrance analyses such as the classic weathered crude oil example pictured below, which shows a GC×GC plot generated on our PEGASUS® BT platform using the FLUX flow modulator.GC×GC TOFMS Chromatogram.

 Diverting Flow

The first and secondary capillary columns are connected together through a simple tube with a fixed gap between the columns. A flow of gas (helium) is then used to inject into the second column or divert to waste. The precise timing and flows are all handled by our integrated software, therefore you just have to click one button to setup and begin performing flow modulation GC×GC on our Pegasus BT platform. Inject Divert mode.

Furthermore, no complex spreadsheets are needed to understand your method. This simple and robust design does not require cryogens to carry out GC×GC, which saves time and boosts efficiency in your lab.

 

FLUX Screens.

 

 
 
 
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Learn more

About Flow Modulation by downloading our white paper "The operation, use, and concepts behind a diverting flow technique."

READ THE WHITE PAPER

Wednesday, 08 August 2018 17:41

ChromaTOF® | Brand Software | LECO

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ChromaTOF® | Brand Software | LECO

ChromaTOF® Brand Software


Developed exclusively by LECO, ChromaTOF is uniquely designed to meet the needs of today’s laboratory professionals by processing and analyzing the large amounts of data that are acquired with our time-of-flight instruments. ChromaTOF offers seamless control of both the instrument and its accessories, as well as an intuitive interface with highly integrated data processing. ChromaTOF is the first mass spectrometry data system to fully accommodate multidimensional chromatographic data (GC×GC).

What Makes ChromaTOF Unique?

  • Data processing is automatically saved within the file system—no extra steps are needed and you can always come back to where you left off
  • Data file system stores and manages meta- and instrument data for you
  • All standard features are contained within one software package; control for some compatible options is built–in and can be activated when needed
  • Easy-to-use, yet powerful, efficient, and robust
  • Frequently updated for improved maintenance and additional feature development

 

ChromaTOF Version 5.0 encapsulates the industry’s most advanced qualitative and quantitative capabilities in one user-friendly data-handling system. Supports both Pegasus BT and Pegasus GC-HRT+ instrument platforms.

Features

  • Automatic tuning and associated report generation
  • Absolute concentration of analytes based on calibration curve
  • Relative quantitation based on a reference’s or analyte’s curve
  • Quantitation from a single channel detector (Flame Ionization Detection FID)
  • Importable ready-to-use workspace templates for access to preferred user interfaces and reduced set-up times
  • Deconvoluted spectra are easily searched against the latest NIST, Wiley, or user-created library for identification
  • Semi-Quantitative Analysis for the reporting of non-calibrated compounds
  • Integrated control of a variety of sample handling options from LECO and Agilent; contact closure for other vendors
  • Automatically export data to CSV, ANDI MS, NETCDF, or LECO file formats
  • Compatibility with LECO's liquid nitrogen or consumable-free GCxGC thermal modulator
  • GC×GC Classification development tools
  • Integrated control of Agilent 7890GC
  • Search for unknown unknowns with ChemSpider
  • Helpful tools to:
        - Calculate monoisotopic mass from formulae
        - Generate formulae from measured mass
        - Calculate mass resolution needed to separate 2 masses

Features Exclusively for Pegasus GC-HRT

  • Automated unknown identification with High Resolution Deconvolution algorithm
  • Automatic fragment formula generation and corresponding mass accuracies from NIST generated library matches
  • Create and use Accurate Mass Spectral Libraries. New LECO Accurate Mass Library, built for the GC-HRT+ gives you complete confidence that a hit is strong identification. Calculate a similarity score (AML Rank) based on accurate masses
  • User-scalable mass defect plots; e.g. Kendrick mass defect scale
  • Optional Spectral Analysis Tool add-on allows you to use Van Krevelen and Carbon Number versus RDBE (ring double bond equivalents) plots, and many other advantages

Pegasus BT Features

  • Automated unknown identification with NonTarget Deconvolution algorithm
  • Full profile mass spectra at are acquired at 35 kHz with better than nominal resolution
Pegasus Instrument Model Latest
ChromaTOF Version
Major Features

GC-HRT
4000 Series

5.10 Addition of the L-PAL3 and
Spectral Analysis Tools

GC-HRT
6000 Series

5.10 Addition of the L-PAL3 and
Spectral Analysis Tools
GCxGC FID
4D, HT (incl “C”)
TruTOF
4.72 Fixes
BT
BT 4D
5.32.09

Added nominal mass data export
with significant fixes

GC-HRT+
6500 Series

5.32.12

Identification Grading System and
significant updates and fixes

 

Used by industry leaders for over 15 years, ChromaTOF-GC supports GC×GC deconvolution, visualization, and reporting.

  • True Signal Deconvolution, Automated Peak Find, and Extended Range Calibration algorithms
  • Enhanced graphics for GCxGC users, including the option of displaying peak labels and peak markers on contour and surface plots
  • Importable ready-to-use workspace templates for access to preferred user interfaces and reduced set-up times
  • Semi-Quantitative Analysis for the reporting of non-calibrated compounds
  • Automatic tuning within user-defined quality control methods
  • Integrated control of a variety of sample handling options from Gerstel, LEAP, Shimadzu, and Agilent
  • Fully-integrated optional environmental report designer
  • Customizable user interface
  • Automatically export data to PDF, CSV, ANDI MS, NETCDF, or Raw file formats
  • Compatibility with LECO's consumable-free GC×GC thermal modulator
  • Classification development tools
  • Capacity for files up to 4 GB and compatibility with Windows operating systems
  • The LECO/Fiehn Metabolomics Library features over 1,100 spectra of 700 unique metabolomics for metabolite identification in your most complex samples. Fully integrated within ChromaTOF, the library works seamlessly with the software's Library Search function to automatically identify potential analyte matches without the need for importing or exporting data.
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ChromaTOF Logo bkg

Simply GCxGC® | Helps GCxGC be part of your every-day analysis | LECO

Simply GC×GC®
The easier way to make GC×GC part of your every-day analysis


Simply GC×GC from LECO is a free tool designed to walk you through the steps of creating an optimized GC×GC method for your complex samples. Create a GC×GC method from scratch, or convert an existing 1D method to GC×GC. The tool will provide logical, step-by-step instructions to determine the secondary oven offset, second dimension column length, and experimentally evaluate stationary phases and peak capacity. Simply GC×GC takes a simple approach to GC×GC, helping you avoid unnecessary testing and streamline your method development cycle.

GO NOW!
 

 

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Simply GC×GC
Wednesday, 08 August 2018 17:41

L-PAL3 | GC Autosampler | LECO

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L-PAL3 | GC Autosampler | LECO

L-PAL3
GC Autosampler


Available exclusively from LECO, our L-PAL3 autosampler offers increased vial capacity, discrimination-free GC injections (ultrafast injections), an automatic tool exchange to switch between injector types (liquid, headspace, or SPME), minimized carryover, and the sensing of vial bottoms to avoid mis-injections. All of these advantages come on a highly robust and integrated platform. The LECO L-PAL3 GC autosampler allows you to safely focus on identifying unknowns in your samples without experiencing downtime and uncertainty in your lab.
 

 

  • Automation for up to 162 two mL samples, or 45 ten/twenty mL samples.
  • Discrimination-free injection speeds with complete injection cycle time down to 100 milliseconds.
  • Bottom-sensing technology ensures that even very small volumes can be sampled.
  • Four separate models available so you may configure your package based on your autosampler needs.

L-PAL3 GC Autosampler for Liquid Injections

This CTC-based robot combines an autosampler and injector that operates in three dimensions of space, providing everything needed to perform standard liquid injections. This package includes a 5-position solvent wash station, tool for liquid syringe injections, mounting kit for 7890B GC, and a single tray holder with three trays (54-positions each) for 2 mL vials. This is a non-upgradable system.

L-PAL3 GC Autosampler for Liquid and Headspace Injections

This CTC-based robot combines an autosampler and injector that operates in three dimensions of space. It provides everything needed to perform standard liquid injections and static headspace injections. This package includes a heated agitator, 5-position solvent wash station, tool for liquid syringe injections, heated tool for headspace syringe, mounting kit for 7890B GC, and two tray holders; one with three trays (54-positions each) for two mL vials, and the second with three trays (15-positions each) for 10/20 mL vials. This configuration requires a manual exchange of tools between headspace and liquid injections.

ITEX Dynamic Headspace Tool

  • Rapid and sensitive enrichment of volatile and semi-volatile compounds from solid, liquid and gaseous samples
  • A choice of different adsorbents for best sensitivities
  • No sample loops, transfer lines or valves, no contamination issues
  • L-PAL3 Automatic Tool Exchange (ATX) enables head space, SPME, and ITEX-sampling within one sequence

L-PAL3 GC Autosampler For Liquid and SPME Injections

This CTC-based robot combines an autosampler and injector that operates in three dimensions of space. It provides everything needed to perform standard liquid injections and all SPME-type analyses (immersion, headspace). This package includes a heated agitator, 5-position solvent wash station, tools for liquid syringe and SPME fibers, SPME fiber conditioning station, mounting kit for 7890B GC, and two tray holders; one with three trays (54-positions each) for two ml vials, and the second with three trays (15-positions each) for 10/20 mL vials. This configuration requires a manual exchange of tools between SPME and liquid injections.

L-PAL3 GC AutoSampler for Liquid, Headspace, and SPME Injections

This CTC-based robot combines an autosampler and injector that operates in 3 dimensions of space. It provides everything needed to perform standard liquid, headspace, and SPME injections. This model allows for automatic switching of injection types, so method development can be automated. This package includes a heated agitator, 5-position solvent wash station, tools for headspace, liquid syringe and SPME fibers, and SPME fiber conditioning station, mounting kit for 7890B GC, and two tray holders; one with three trays (54-positions each) for two mL vials, and the second with three trays (15-positions each) for 10/20 mL vials.

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L-PAL3 Details

L Pal 3

  • Models
    1. L-PAL3 GC for Liquid Injections

    1. L-PAL3 GC for Liquid and Headspace Injections

    1. L-PAL3 GC for Liquid and SPME Injections

    1. L-PAL3 GC for Liquid, Headspace, and SPME Injections
            • Options
              1. SPME Arrow
              1. ITEX Dynamic Headspace
Product literature
L-PAL3 Autosampler
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