Verify a lot number

Every sample the house assays is entered against the lot number the supplier printed on it. Type that number below to confirm the physical lot was analysed here and to open the certificates it was issued under.

If the number is not in the ledger

A miss is not a verdict. The house assays what it procures and what is sent to it; a lot it never received will not be on file, and that says nothing about the material itself. If you hold the vial, send it in — the assay is free and the result is published either way.