Quality and testing

Independent testing

Batches are sent to independent analytical laboratories. We publish the certificate as the PDF or image the laboratory issued.

What a certificate states

• The compound and the labeled quantity per vial
• The batch the result applies to
• The date the sample was tested
• The measured result, such as content and purity, with the method the laboratory used

Matching a certificate to a vial

Each certificate in the COA library lists its batch. Compare it with the batch on your packing slip or vial. If they differ, contact support before using the material and we will send the certificate for your batch.

Reference identity data

CAS numbers, formulas and molecular weights on the compound pages come from PubChem and link to the PubChem record. They describe the compound, not a specific batch.

Storage

Lyophilized materials ship at room temperature in sealed vials. On receipt, store them sealed at −20 °C, protected from light. Each compound page lists its own storage conditions.