Increased Throughput for Trace Impurities and Residual Solvent Determination with Unattended Liquid/Headspace
Event Date: May 09, 2012 at 11:00 AM Eastern Daylight Time
US Pharmacopeia (USP) method <467> details the procedures for the identification, control and quantification of Class 1 and Class 2 residual solvents through the use of headspace gas chromatography. Some pharmaceutical laboratories must also analyze solvent impurities as part of the incoming raw material testing process according to the various solvents’ monographs. For this purpose, liquid GC injection is normally chosen.

Because of the limitations of the GC instrumentation currently available, most of these laboratories dedicate one instrument to headspace analyses and another one to liquid injection analyses even if their injector/detector configuration is the same, which places limitations on lab productivity and spending.

In this webinar, we will present the use of an innovative robotic autosampling platform which possesses the ability to automatically switch from liquid to headspace mode and use different syringe volumes in the same run or sequence onto a single GC.

Test results of residual solvents quantification, where sample and standard preparation steps according to the USP method <467> procedures are carried out by the autosampler prior to the headspace analysis, will be shown. The lack of carryover achieved by the use of a headspace gas-tight syringe that is heated and flushed between injections will also be discussed.


Laura Bush

Editorial Director
LCGC North America


Silvia Gemme

Gas Chromatography Product Specialist
Thermo Fisher Scientific

Massimo Santoro
Gas Chromatography Product Manager
Thermo Fisher Scientific

This is a FREE streaming audio Webcast and does not require a phone line. If you have any questions regarding this Webcast, please contact Jamie Carpenter,

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