The BenchMark Performance Audit was designed to be the next generation to the US EPA’s Water Pollution (WP) and Water Supply (WS) studies with significant improvements.

    • Multi-laboratory performance evaluation format
    • Choice of whole volume or concentrated samples

You can order BenchMark PT samples as part of your laboratory’s certification process. The BenchMark Performance Audit may be used to demonstrate compliance with EPA, NELAC or state specific requirements for obtaining and maintaining laboratory accreditation. Although PT samples can be ordered at any time, each study is 45 days long, and we offer many studies throughout the year.