COA Database
Certificate of Analysis lookup
Look up a batch certificate with the batch (lot) number printed on the vial label. All products are for laboratory and in-vitro research use only.
What the certificate tells you
Identity. The measured molecular weight from mass spectrometry, compared with the expected value for the compound.
Purity. The share of the sample that is the target peptide, from the HPLC chromatogram. Our specification is 99 percent or higher.
Net content. Where measured, the quantity of peptide actually present in the vial, which can differ from the nominal fill.
Lot and dates. The lot number, the test date and who carried out the analysis.
On file
Certificates
Certificates for LABS PTG lots. Look up the certificate for your order with the finder above.
Certificates are published here as each lot is released. Use the finder above with the lot number printed on your vial label.
Method
How a lot is released
1. Sample
A vial from each incoming lot is set aside and logged against the lot number before any stock is listed.
2. Analyse
Mass spectrometry confirms identity; reverse-phase HPLC with UV detection measures purity and flags related impurities.
3. Release or reject
Lots that meet the specification are released and their certificate filed. Lots that do not are returned to the supplier.