01
COA must connect to a real batch
A useful COA should reference batch number, assay result, test method, production date and relevant contaminant checks.
02
HPLC supports marker verification
For standardized extracts, HPLC chromatograms help buyers confirm the active marker and compare batch consistency.
03
Traceability supports repeat procurement
Batch records, raw material origin and document history help procurement teams reduce variation across repeat orders.