Laboratory Products

  • New Twister for Wide Polarity Range

New Twister for Wide Polarity Range

Apr 25 2012 Read 1324 Times

A new combined ethylene glycol (EG)-Silicone Twister enables efficient extraction of both nonpolar
and a range of polar compounds.

Stir Bar Sorptive Extraction (SBSE) using the patented Gerstel Twister® is an accepted and highly efficient extraction technique for the determination of organic compounds in aqueous and other samples. The new combined ethylene glycol (EG)-Silicone sorbent phase complements the standard PDMS phase, enabling extraction of a much wider range of compounds from aqueous samples. SBSE with the EG-Silicone Twister is performed just like any other SBSE extraction: Place the Twister in the sample and allow it to stir for 20 minutes to one hour. While stirring, the Twister extracts non-polar and a range of polar compounds and these are concentrated in the sorbent phase. The Twister is removed, rinsed with DI water, dabbed dry using lint-free paper tissue, and placed in a thermal desorption tube for desorption in a Gerstel Thermal Desorption System (TDS) or Thermal Desorption Unit (TDU). Analyte focusing, separation, and determination follows in the GC/MS system. The EG-Silicone Twister especially improves  the extraction of phenols and other compounds that form hydrogen bonds as hydrogen donors.

Reader comments

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Post a Comment




Digital Edition

Lab Asia April 2019

April 2019

In This Edition Articles - Mobile Affinity Sorbent Chromatography Of Proteins - Integration of MS and UV Data for Peak Tracking in HPLC Method Development - VMXm takes its First Users 'wher...

View all digital editions

Events

ASMS Conference

Jun 02 2019 Atlanta, GA, USA

Drug Discovery Summit

Jun 10 2019 Berlin, Germany

HPLC 2019

Jun 16 2019 Milan, Italy

Chemspec Europe

Jun 26 2019 Basel, Switzerland

View all events