What every batch has to pass
These are the checks a lot goes through before it appears in the store, and how to read the certificate that comes with it.
Our standards
Documentation first
A batch is listed only once its certificate is on file.
Independent verification
Third-party labs run the purity analysis.
Batch transparency
Results are published per lot, not averaged across lots.
Responsible positioning
Listings describe research materials only — no usage guidance.
What is a Certificate of Analysis?
A COA is the lab's report for one specific batch. It records what was tested, how, when, and the result.
Reading a COA
Batch identifier
Match it to the ID printed on your vial.
Purity result
The percentage reported by the lab for that batch.
Analytical method
Usually HPLC with mass-spec identity confirmation.
Test date
When the sample was analysed.