The science of PFAS analysis has long needed a standardized, validated test method for non-potable liquids and solids. Once finalized and promulgated, Draft Method 1633 promises to be the solution we’ve been waiting for. Or does it?

Those of you who attended our deep dive into the 3rd Draft of Draft Method 1633 are well aware of some of the challenges we see with this method. Although the EPA has published a 4th draft, many of these challenges remain, and there’s a solid chance they won’t be addressed in the final version.

To be clear, if Draft Method 1633 is required for compliance (e.g., as it is in some NPDES permitting), that is the method that must be used. However, when not required for compliance purposes, ASTM D8421/EPA 8327 offers a low-volume test method that is procedurally less complex than Draft Method 1633 – and that translates into faster, more affordable testing and analysis!

Want to learn more? Our PFAS experts have written an article introducing ASTM D8421/EPA 8327, which is published on the Pace® Labs blog For those wanting a deeper dive into the method, we also offer an on-demand webinar.

Read: Draft Method 1633 Is Not the Only Option for Analyzing PFAS in Non-Potable Water and Solids

Watch: A Deep Dive into EPA 8327 / ASTM D8421

And as always, if you want to discuss the method or a specific project, the Pace® PFAS team is here to help.

Contact Pace®

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