Specification against measurement
These are two different things and the category uses them interchangeably. A release specification is the bar a lot has to clear before it is sold — ours is >99% (HPLC). A measurement is what one particular lot actually assayed at, and it belongs to that lot and no other.
Product tiles on this site print the specification and label it as such. Where a laboratory has measured that exact SKU, the tile also carries the measured figure as a separate badge with the lot number printed beside it, so the two can never be read as one number. A tile that printed a measured figure with no lot attached would be advertising a result from a vial somebody else received, which is why ours never do that — no lot, no badge, and a certificate for a different fill of the same compound does not qualify.
Why batch-specific certificates matter
A representative certificate is a real document from a real assay — of a lot that is not yours. Suppliers use them because testing every batch costs money and because most buyers never check. The failure mode is quiet: the certificate is genuine, the figures are genuine, and the vial in front of you was never tested.
The check takes ten seconds. Read the lot number on the vial, read the lot number on the certificate, and confirm they are the same string. If a supplier cannot produce a certificate that matches, what they have is a specification and not a measurement. The certificate archive explains how to read one.
What arrives with an order
- The vials, lyophilised and sealed, each labelled with the compound, the fill and the lot number.
- The certificate of analysis for that lot, with the chromatogram, the release specification and the release date.
- Storage and reconstitution conditions for the compound — stated per compound on its product page, because they are not identical across the catalogue.
Parcels leave British Columbia, Canada and travel domestically, so a lot does not spend an unknown number of days in a customs facility between being released and being received. That is a quality argument as much as a logistics one.
What we do not claim
No accreditation is claimed on this page and no detection limit is quoted. The laboratory named on the certificates is named because the documents name it, and every certificate carries that laboratory’s own verification link — the claim is checkable without going through us, which is the only form of it worth making. Everything beyond that is a statement about arrangements that has to be verifiable before it is published, and a supplier implying one without stating it is doing the thing this page exists to argue against.
Each certificate also closes with the laboratory’s own sentence: results relate to the sample as received and carry no pass or fail determination. The comparison against >99% (HPLC) is ours, not theirs, and it is labelled that way everywhere it appears.
