A Study of Purge Flow Rates and Times and Its Effect on Volatile Organic Compounds

Oil splash.

During volatile analysis, samples are purged with an inert gas in order for the Volatile Organic Compounds (VOCs) to be swept out of the sample matrix and onto an analytical trap. For years, the established and recommended purge flow rate and time has been 40ml/min for 11 minutes. However advances in instrumentation technology have led to the potential for greater efficiencies in conducting VOC analysis. This study reviews four sets of time and flow parameters and their respective outcomes.

Our Impact

EST Analytical has been helping labs achieve their analytical goals for over 30 years. Our vision is to engineer reliable laboratory instruments that enable partners to make the world a better place.

To help labs excel we offer Application Notes across our entire product line. They are a resource that explains the technology, performance, and abilities of our products as used against certain methodologies and or applications.

Whether your needs center around a USEPA method, an ASTM Standard, or a sample matrix-based outcome EST has you covered. If you don’t see the technical direction you need, simply contact us. We also offer sample analysis in our onsite Applications Lab.