Solution For Thermal Desorption And Thermal Extraction
1 noiembrie 2016
Automated Liner Exchange (ALEX)
1 noiembrie 2016
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Cooled Injection System (CIS)

Caracteristici:

  • Universal injection system for all injection techniques: split, splitless, on-column and large-volume up to 1000 µl.
  • Cryotrap enrichment system in combination with sample preparation systems, for example, the GERSTEL Thermal Desorption System TDS, the GERSTEL Dynamic Headspace DHS, the GERSTEL Thermal Desorption Unit TDU or the GERSTEL MultiPurpose Sampler MPS.
  • Multiple cooling options offer optimal adaption to the individual needs.
  • Improved quantitation due to controlled evaporation and discrimination free analyte transfer.
  • Improved limits of detection, improved identification and improved quantitation through sharper peaks.
  • Lower background signal, no septum bleed, improved detection limits thanks to patented Septum-Less Head (SLH).
  • Best possible transfer and recovery of thermally labile analytes due to patented heating system and freely programmable heating rates.
  • Reliable analysis of samples with high matrix load using Automated Liner EXchange (GERSTEL ALEX).

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.

The GERSTEL CIS provides two essential system-functions:
  • Universal injection system for all injection techniques: split, splitless, on-column and large-volume up to 1000 µl.
  • Cryotrap enrichment system in combination with sample preparation systems, for example, the GERSTEL Thermal Desorption System TDS, the GERSTEL Dynamic Headspace DHS, the GERSTEL Thermal Desorption Unit TDU or the GERSTEL MultiPurpose Sampler MPS.

The CIS is easily and conveniently controlled from the GERSTEL MAESTRO Software – stand alone or through the Agilent Technologies ChemStation software.

The CIS can be cooled to temperatures as low as – 180 °C making it uniquely suitable as cryo-trap for VOC analyte concentration in combination, for example, with Thermal Desorption. Additionally, the CIS can be used to concentrate analytes through Large Volume Injection (LVI) with solvent venting. This provides to substantially lower limits of detection. PTV and LVI injections are typically performed using GERSTEL exclusive cryogen-free Universial Peltier Cooling (UPC) or cryostaic cooling.

Depending on the required starting temperature, cryogenic cooling may also be used. At the other end of the temperature scale, the CIS 4 operates up to 450 °C for determination of SVOC, PAHs and some waxes. The high temperature version (CIS 6) scales the heights up to 650 °C, enabling pyrolysis of polymers in suspension following initial evaporation of the solvent. Whichever version the analyst is using, all CIS inlets are based on patented heating and cooling systems and optimized inlet liner dimensions that provide uniform temperature profiles throughout the entire – 180 °C to 650 °C temperature range for controlled evaporation and best possible results.

CIS benefits
  • Multiple cooling options offer optimal adaption to the individual needs.
  • Improved quantitation due to controlled evaporation and discrimination free analyte transfer.
  • Improved limits of detection, improved identification and improved quantitation through sharper peaks.
  • Lower background signal, no septum bleed, improved detection limits thanks to patented Septum-Less Head (SLH).
  • Best possible transfer and recovery of thermally labile analytes due to patented heating system and freely programmable heating rates.
  • Reliable analysis of samples with high matrix load using Automated Liner EXchange (GERSTEL ALEX).