Laboratory Products

  • New Twister for Wide Polarity Range

New Twister for Wide Polarity Range

Apr 25 2012 Read 1267 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.

Read comments0

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.

Digital Edition

Lab Asia February 2019

February 2019

In this edition Articles - Detection of molecular markers in aquatic sediments by ion profi les obtained by GC/MS system - Fighting the Resistance: How Rapid Microbial ID with MALDI MS and A...

View all digital editions


BioPharma World Expo 2019

Feb 20 2019 Mumbai, India

Medical Fair India 2019

Feb 21 2019 New Delhi, India

Biotech World

Feb 25 2019 Moscow, Russia

China Lab 2019

Feb 26 2019 Guangzhou, China

SmartLab Exchange

Feb 27 2019 Berlin, Germany

View all events