Do Chemkey® Reagents have certificates of analysis (COAs)? If so, where can I download them?
Chemkey® Reagent COA
Unlike other Hach reagents, Chemkey® Reagent COAs are not lot specific. They can be found by searching for the product number of the Chemkey® Reagents on www.hach.com and clicking the "Downloads" tab where it will be listed under Datasheets/Brochures as a Quality Certificate.