Certificates of Analysis

Every lot we ship is identified by a lot number printed on the vial label.

A certificate of analysis is the document that records what testing was performed on that specific lot and what the results were. It is lot-specific: two vials of the same material from different lots have different certificates.

## What a certificate records

A certificate typically states the material identity, the lot number, the date of analysis, the analytical methods used, and the results those methods returned. Appearance and mass are recorded as observed.

## Reading the results

An analytical result describes the material that was tested. It is a measurement, not a guarantee about any other lot, and not a statement about use.

## Availability

Certificates are published per lot as analytical results come in. Where a certificate is not yet published for a lot, no certificate is claimed for it.

All materials are supplied for laboratory research use only. They are not for human or veterinary use, not food, and not drugs.