EPA 1633, PFAS, ASTM D8421, MUR
Merit Laboratories, Inc.
PFAS by EPA 1633A and ASTM D8421 Included in ...

The analysis of PFAS by EPA 1633A and ASTM D8421 is part of the U.S. EPA’s Methods Update Rule (MUR) Rule 22. The action will promulgate EPA into 40 CFR Part 136. Also part of this action, PFAS method ASTM D8421 is proposed to be codified. 

PFAS by EPA 1633A and ASTM D8421 Included in EPA Methods Update Rule 22

QA-QC

Helping You Understand Quality Assurance-Quality Control Samples

Helping You Understand Quality Assurance-Quality Control Samples

After receiving your analytical data report, do you ever wonder why all of the additional quality assurance-quality control (QA-QC) samples are analyzed and reported?  The following definitions will help you better understand the various QA-QC samples commonly reported by Merit Laboratories and what they can mean for your analytical data.