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Research use only. Not for human or veterinary use Third-party tested, every lot
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Method 1 min

What mass spectrometry confirms, and what it does not

Identity confirmation compares observed mass to theoretical mass. It says nothing about how much of the vial is that molecule.

Pure Labs analytical team Reviewed by the lab that runs the assays

Identity confirmation compares observed mass to theoretical mass. It says nothing about how much of the vial is that molecule.

What the number means

Every figure Pure Labs publishes is tied to a method, a lot and a date. This note explains how to read it, and what it does not tell you. Nothing here is guidance on use.

How we apply it

Certificates for every lot are public in the lab results library. If a printed figure and a certificate disagree, the lot is withdrawn.

Next notes

Method How to read an HPLC purity figure without over-reading it Documentation Reading a certificate of analysis line by line