Batch control
A batch is the unit that quality statements attach to. Defining it precisely — and keeping it intact through fill and labelling — is what makes a certificate meaningful.
A batch is material produced from a single synthesis campaign, purified together, pooled and homogenised before fill. Material from separate campaigns is not combined under one lot number, because doing so would make a single analytical result describe two different populations.
The lot number is assigned at pooling and stays with the material through fill, labelling, storage and dispatch.
Homogeneity is what allows one sample to speak for thousands of vials. Purified fractions are pooled and mixed before aliquoting, fill volumes are checked periodically across the run, and the fill sequence is recorded so that any vial can be located within it.
Verification is the ability to walk in either direction: from a vial in your hand to the analytical record, and from a record back to every vial it covers.
Yes. Each lot is analysed independently and reports its own result, which is why documentation is indexed by lot rather than by product.
Contact laboratory support with the lot number. Every released lot has a record; a missing published document is a publication gap, not an absence of data.
Compounds with a published certificate of analysis, where the methodology described on this page can be read against a real lot record.
PrimeGen Co. laboratory documentation team
Editorial and analytical documentation
Our documentation team maintains lot records, certificate presentation and the educational material on this site. Pages describe our own internal practices and published analytical methodology; they are not an independent certification of any kind.