Gerstel-Twister

The Gerstel-Twister allows analysis of organic compounds from aqueous matrices by Stir Bar Sorptive Extraction (SBSE): Faster than with conventional techniques, omitting time-costly preparation steps and solvents and up to 1000´ more sensitive than SPME. The GERSTEL-Twister looks like a conventional magnetic stirring rod, and works the same – except for one small difference: While it is stirring, it adsorbs and concentrates the organic contents onto its coating of polydimethylsiloxane (PDMS).

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