U.S. EPA releases new analytical method for PFAS in drinking water

U.S. EPA
December 18, 2019

Method 533 is a solid phase extraction (SPE) liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of select per- and polyfluoroalkyl substances (PFAS) in drinking water.

The new validated Method 533 focuses on short chain PFAS, those with carbon chain lengths of 4-12. Using it in combination with existing Method 537.1, both government and private laboratories can now effectively measure 29 PFAS in their drinking water.

EPA Method 533 (PDF, 52 pp, 876 K, December 2019, 815-B-19-020)

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