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Headspace Preconcentrator Recovers Thermally Labile CompoundsThe 7150 Headspace Preconcentrator is designed to recover thermally labile compounds for GC and GCMS applications, such as those containing sulfur, phosphorus and nitrogen. The 7150 is able to recover C2 to C25 compounds at PPM to sub-PPB levels, including labile compounds unable to survive strong adsorbents or a hot GC injector. A first stage implements Active SPME allowing compounds from C12 to C25 to be trapped and desorbed quantitatively. Lighter, unretained compounds are recovered utilizing a CO2 cooled Tenax trap. Cold trapping allows recovery of sulfur compounds, amines, and other thermally labile compounds that will not survive exposure to strong adsorbents. Dean Switching is used to control flows, eliminating absorptive surfaces and dead volume associated with the carryover of heavier and more polar compounds. Moisture is removed prior to GCMS sample injection using direct vapor to solid phase cold trap dehydration that does not cause the loss of other headspace compounds. Applications for the instrument include environmental testing, industrial hygiene, breath analysis, forensics, product testing, homeland security, package testing, and residual solvent testing in pharmaceuticals.
Entech Instruments, Inc.
2207 Agate Ct.
Simi Valley CA 93065
Phone: 805-527-5939
Fax: 805-527-7913
http://www.entechinst.com
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