Solvent Back-Extraction Automation Option Twister automation for new applications, including LC and direct-injection GC/MS Addition of backextraction solvent Removal of solvent extract for injection

GERSTEL Twister stir bar sorptive extraction (SBSE) is a powerful tool for efficiently extracting organic compounds from aqueous and other polar solutions. When volatile and semi-volatile compounds are to be determined by GC or GC/MS, thermal desorption using a GERSTEL TDS 3 or TDU is the most effective technique for transferring analytes from the stir bar for analysis. This produces the highest recoveries of analytes from the stir bars, and the lowest detection limits and background levels. Analytes are transfered almost 100% to the GC column. However, when non-volatile or thermally labile compounds...