 Validating Identity, Mass Purity and Enzymatic Purity of Enzyme Preparations by John E. Scott and Kevin P. Williams

Primary source: www.ncbi.nlm.nih.gov/books/NBK91995/?report=reader

Verified locator: Assay Guidance Manual, created 2012-05-01 and updated 2012-10-01; Definitions and Interrelationships sections. Primary author bylines verified at pubmed.ncbi.nlm.nih.gov/22553867/ .