AssayIndex
Quality system

Specification

A decision about what result is acceptable. Not a measurement. Conflating the two is how "≥ 99.0 %" becomes "99.0 %" on a certificate.

Related terms

Rule AX-R04
Repeated round-number purity declarations from one supplier. Requires a pattern of at least three, because one round result is unremarkable.
Certificate of analysis (COA)
A document stating test results for a specific lot. In this market frequently lacking a method section, a lot number, or both.

Where this term appears

The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.