A COA is not legally or regulatory valid without authentication. It concludes with the signature, electronic stamp, or approval mark of the Quality Assurance (QA) or Quality Control (QC) manager. The Importance of the COA in Laboratory Work
: Visit the official manufacturer portal (such as the UCT CoA Search ) and enter the lot number.
A company stamp alone is not sufficient for GMP. It must have a physical or digital signature (or initials) of the authorized QA person.
: Once found, you can download the document for your records.
The date after which the manufacturer can no longer guarantee the chemical meets the specified purity levels without retesting. 3. Specifications vs. Actual Results
The actual measured values for purity, moisture content, pH, or trace metal levels.
Before understanding their COA, it is essential to appreciate the organization behind it.
