Catalog excerpts
GLOBAL ANALYTICAL SOLUTIONS Thermal Desorption System Lowest Detection Limits Accurate Results
Open the catalog to page 1GERSTEL Thermal Desorption System TDS 3 The GERSTEL TDS 3 is a flexible multi-functional thermal desorption system for highly sensitive and accurate determination of volatile and semi-volatile organic compounds (VOCs and SVOCs). Analytes can be desorbed and concentrated from adsorbent tubes, from GERSTEL Twisters® or directly from solid or viscous samples that have been placed in TDS tubes - without the need for sample preparation. The TDS 3 enables the analyst to accurately determine analytes, even at ultra-trace levels, in gaseous, liquid or solid samples. When a TDS A2 autosampler is...
Open the catalog to page 2GERSTEL - The leading provider of customer focused solutions for Thermal Desorption Flavors, off-odors and trace level contaminants Complex flavors and fragrances, odors and off-odors in raw materials and final products. Complex analysis using multidimensional GC/MS and olfactory detection. Flavors, fumigants, nitrosamines, additives and trace level organic compounds Emission from materials used in vehicle interiors, vehicle indoor air monitoring, and engine exhaust monitoring VOC Emissions from toys (EN 71-11:2005 Safety of toys) VOC and SVOC contaminants in materials and sub-assemblies....
Open the catalog to page 3The TDS 3 transfer line between the sample and the trap is only 15 cm long and it can be heated to 400 °C for best possible analyte transfer. No transfer line is needed between the trap and GC column since these are directly connected. There are no cold spots in the system; optimum transfer of VOC and SVOC compounds to the GC column is ensured (see chromatogram "Air Sample on Glass Fiber Filter" on this page). Cooled Injection System CIS trap for best performance and versatility No valves in TDS flow path No transfer line between and trap and GC column, unique design Multi-level temperature...
Open the catalog to page 4The CIS functions as focusing trap; trapping on glass, quartz or adsorbent for best flexibility and selectivity; inert system with high-flow transfer of analytes for best recovery and accuracy; split or true splitless analyte transfer to the GC column enables covering a wide concentration range and providing ultra-low detection limits No downtime due to valve failure, contamination or leaks. Simple, robust system, easy to keep clean, no carry over, reliable results The best transfer line is no transfer line. Optimum analyte transfer for best recovery and highest sensitivity Transfer only...
Open the catalog to page 5The GERSTEL TDS 3 Thermal Desorption System provides you with maximum flexibility• Conventional Thermal Desorption Volatile and semi-volatile compounds can be determined by sampling a gas using one or more of a wide range of adsorbents. Desorption of the sample can be performed in four different modes using a flexible, software controlled pneumatic system. • Direct Thermal Extraction Dynamic headspace of volatile and semi-volatile compounds in solids or gels can be performed directly without sample preparation. The TDS allows liquid injection to be performed simultaneously in the back inlet...
Open the catalog to page 6• GERSTEL TDS3 Manual thermal desorption system for conventional thermal desorption or direct thermal extraction/dynamic headspace. The system has the option of using LN2 or LC02 cooling. • GERSTEL TDS A2 The addition of a TDS A2 to a TDS 3 or TDS 3PLUS provides complete automated processing of up to 20 samples using multiple analysis methods. • GERSTEL TDS 3 PLUS The GERSTEL TDS 3PLUS has an integrated Peltier cooling system that eliminates the need for cryogenic cooling.
Open the catalog to page 7Technical Summary GERSTEL Thermal Desorption Systems Thermal Desorption System TDS 3 Transfer capillary Desorption oven Conventional thermal desorption systems usually consist of a desorption unit, a cooled, adsorbent filled trap and a long transfer line coupled directly to the GC column. The TDS 3 is a highperformance thermal desorption system that uses the GERSTEL Cooled Injection System CIS 4 as cryogenic trap. The CIS 4 can be used as a GC inlet as well, providing maximum flexibility. Analytes are focused in the inlet liner, before being transferred onto the analytical column as a...
Open the catalog to page 8High performance accessories for even greater versatility GERSTEL Tube Conditioner TC 2 GERSTEL Thermal Extractor TE 2 Conditioning of up to ten GERSTEL thermal desorption tubes or up to 50 GERSTEL Twisters. Tubes are held at a user-defined elevated temperature and purged with inert gas. Sample preparation system for thermal extraction and concentration of analytes from bulk materials or large samples. Applications Packaging industry Benefits of off-line tube Analysis of packaging for off-flavors conditioning: Flavors and fragrance industry The TDS/GC/MS system is kept clean Determination...
Open the catalog to page 9Online analysis with the TDS Sample taken from rape plants Extracted ion chromtogram. The figure shows the mass traces m/z = 50 (ISTD) and m/z = 93 (monoterpene). Sabinene Myrcene beta-Phellandrene Eucalyptole The GERSTEL Online TDS G is designed for continuous monitoring of compounds in air, gas streams or large volume headspace. The TDS G features automatic sample volume control and reversed sample desorption flow. spiked with a 22 Compound Standard Transfer of Fraction #1 (pre-Benzene) onto the Polar Column Abundance Ethane Acetylene Propane Propylene i-Butane n-Butane Chlormethane...
Open the catalog to page 10Reliable results with GERSTEL approved consumables All GERSTEL consumables are subjected to rigorous testing before being approved for use with GERSTEL systems. Using approved GERSTEL consumables ensures optimum performance. Desorption tubes Desorption tubes are available for a wide range of applications. Tubes can be supplied empty, or packed with the adsorbent of your choice. All tubes have a unique identification number, and are available unconditioned or conditioned in storage containers. Standard adsorbents: Sample magazine for the TDS A2 Stores up to 20 TDS tubes. The automatic...
Open the catalog to page 11GERSTEL MAESTRO Software Next generation software for automated sample preparation and sample introduction. MAESTRO optimizes performance and throughput of GERSTEL modules and systems. Sample Prep by Mouse-Click The MPS is an autosampler and sample preparation robot for GC and LC. Sample preparation steps are performed during the analysis of the preceding sample for best possible system utilization and highest sample throughput. Sample preparation steps are performed in a controlled and highly accurate and reproducible manner for best possible results. Every step is selected by mouse-click...
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