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Certificates, and what “not on file” means

A certificate of analysis is a document about a lot. If we do not have the document, we do not invent the numbers that would have been on it.

Sable Peptides editorial · Reviewed 2026-09-22 · Next review 2027-03-21

A certificate is a file, not a mood

A certificate of analysis, where a supplier issues one, belongs to a lot. It may list tests and results. Sable Peptides’s catalogue does not currently store those files. The honest sentence is: not on file.

What we will not backfill

We will not type a plausible purity, a plausible pH, or a plausible lot code to make a product page look finished. Those figures would be fiction. Fiction in a specification is worse than a gap.

When a file exists later

The operator desk can change a record. Until a real file is attached and checked, the public sentence stays “not on file”. Attachment of files is a later piece of work; the status exists so the sentence does not have to change shape.

See lots, and what we will not invent.

Sources. No external paper is cited. This page describes Sable Peptides Peptides' own catalogue rules.

Related notes