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Automated Liner EXchange (ALEX)

Automated Liner EXchange (ALEX)

Improved routine analysis of samples with high levels of involatile compounds, particulates and other solid matrix material

Matrix residue from samples can contaminate a GC inlet liner afterwithin a few runs, leading to peak broadening and loss of analytes through adsorption in the liner. Under such conditions, the analyst is forced to perform frequent liner replacement, an operation which normally requires manual intervention. Running large series of samples will represent a serious challenge.

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Automated TDU-Liner EXchange (ATEX)

Automated TDU-Liner EXchange (ATEX)

Direct Thermal Extraction in disposable micro-vial inserts.

The ATEX option enables the introduction of liquid samples directly into micro-vial inserts used for thermal Desorption / Thermal Extraction in the TDU. Extracted analytes are refocused and concentrated in a Cooled Injection System (CIS) inlet prior to introduction to the GC/MS system.

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Cooled Injection System (CIS)

Cooled Injection System (CIS)

GERSTEL Cooled Injection System – internationally the most frequently used PTV-type universal inlet, with patented septumless sampling head. Gas chromatographic analysis is now more versatile, reproducible and has lower detection limits than ever before, thanks to temperature programmed sample injection using GERSTEL Cooled Injection System.

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Dynamic Headspace (DHS)

Dynamic Headspace (DHS)

Automated Dynamic Headspace (DHS) is available for the GERSTEL MultiPurpose Sampler (MPS). The DHS station efficiently extracts and concentrates VOCs from liquid or solid sample placed in standard Headspace vials (DHS) or in larger sample containers up to 1 L volume (DHSLarge). The sample is thermostated and agitated while the headspace is purged with a controlled flow of inert gas, providing controlled and efficient extraction conditions. Sample temperatures can be selected from 10oC to 200oC. Lowering the temperature provides a means of reducing the amount of water vapor released and ultimately retrapped. The DHS station additionally holds a replaceable adsorbent- or sorbent filled tube used for analyte concentration. The temperature of the adsorbent tube during the DHS process can be varied from 20oC to 70oC for optimal trapping of the analytes in question.

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Dynamic Headspace Large (DHSLarge)

Dynamic Headspace Large (DHSLarge)

The DHS can be extended with the DHSLarge module to perform analysis of large or inhomogeneous bulk samples. For example, consumer products, packaging or flooring material can be placed directly in sample containers up to 1L in volume. Sample holders are available for flooring material, eliminating interfering emissions from the edges of the cut sample. Purge periods can be introduced to simulate air exchange conditions in environmental chambers. A series of analyses can be performed on a sample to determine emission behavior over time. DHS operation or DHSLarge operation is selected by mouse-click.

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easy Liner EXchange (eLEX)

easy Liner EXchange (eLEX)

GERSTEL eLEX: Fast and easy manual GC inlet liner exchange.

When analyzing samples with high levels of involatile or insoluble matrix residue, GC inlet liners can become contaminated a after just a few runs. Matrix build-up can lead to peak broadening and loss of analytes through adsorption in the liner. Under such conditions, in order to get correct analysis results, the analyst must regularly perform a liner exchange, an operation which normally requires several manual steps. Using eLEX this complex task becomes quite simple: An ALEX sampling head is mounted on top of the Cooled Injection System (CIS) inlet and whenever the liner has to be exchanged the pneumatic lock is released.

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GERSTEL On-Column Injection Kit

GERSTEL On-Column Injection Kit

The GERSTEL On-Column Injection Kit quickly, and easily converts a CIS into an on-column inlet.

Main Features and Advantages
  • Allows CIS inlet to be used for on-column injection no need to buy a dedicated on-column inlet.
  • Automated sample injection available with GERSTEL MPS
  • Electronic pressure control (EPC)
  • Accurate heating and cooling through CIS
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MPS Liquid

MPS Liquid

The MPS Liquid is a highly efficient liquid autosampler for modern high-throughput GC/MS and LC/MS analysis work.

Focusing on the core taks of an autosampler, the MPS Liquid offers large sample capacity, modern intuitive software control, as well as the capablity to perform key sample preparation steps such as the addition of internal standards or a derivatization reagent. The MPS helps you ensure that your laboratory offers fast, responsive and productive analyses. Last but not least, the MPS Liquid helps to ensure that your results are reliable and accurate.

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Permeation of Chemicals Solutions (Gases & Liquids)

Permeation of Chemicals Solutions (Gases & Liquids)

The LabAlliance Instruments Solution for measuring chemical resistance in gloves provide standard test method for measuring permeation of liquids and gases through gloves or other protective clothing materials in accordance of ASTM F739 or EN 374-3 2003 and EN16523-1(2015).

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Thin Film SPME (TF-SPME)

Thin Film SPME (TF-SPME)

Solid Phase Micro Extraction (SPME) is a widely used technique for extraction and concentration of VOCs and SVOCs combined with GC/MS. SPME is especially useful in the food, flavor and beverage industries and for environmental monitoring. Recent developments focus on increased phase volumes to reach sensitivities more comparable to the GERSTEL-Twister. The Thin Film SPME (TF-SPME) technology combines higher sorbent phase volumes and a large surface area based on a flat rectangular shape.

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Twicester®

Twicester®

For Multi-Stir Bar Sorptive Extraction (mSBSE).
The GERSTEL Twicester® offers a simple possibility to position one or more Twisters magnetically on the inner wall of a sample vial for more efficient sample extraction. The Twicester approach enables the extraction of a sample using more Twisters simultaneously, for example using Twisters with different types of phases for a more complete combined extraction and improved analyte recovery. The method, referred to as Multi-Stir Bar Sorptive Extraction (mSBSE), was developed in a cooperation between GERSTEL K.K, Tokyo, Japan , and Research Institute for Chromatography (RIC) of Professor Pat Sandra in Kortijk, Belgium. Twicester is well suited for the simple and efficient determination of a wide range of flavor compounds in aqueous matrices and it has been used successfully for the analysis of beverages.

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Twister® / Stir Bar Sorptive Extraction (SBSE)

Twister® / Stir Bar Sorptive Extraction (SBSE)

The GERSTEL Twister® enables efficient extraction of organic compounds from aqueous matrices based on Stir Bar Sorptive Extraction (SBSE). SBSE is a solvent-free extraction technique, which is significantly faster than most conventional extraction techniques. SBSE is up to 1000x more sensitive than SPME since the stir bar has significantly more sorbent volume and since it can extract, and concentrate analytes from, a much larger sample volume due to the efficient stirring.

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