What SW-846 actually requires of a sample container, and what it hands back
A 40 mL VOA vial came back from the field with a headspace of 9 mL, the lab ran it by EPA Method 8260C, and the resulting benzene result was flagged at a relative standard deviation of 22% across triplicate injections. The sample was not the problem. The auditor’s first question was not about the instrument either. It was: “Show me the lot certification for the septa on that vial, and the closure torque your field crew was trained to.” That question, and the paperwork behi...
