Testing and certificates
Every peptide lot is tested for purity by HPLC before release, and each lot has its own certificate of analysis.
Request a certificate of analysis
Enter the lot number from your vial or packing slip and we’ll email you that lot’s COA, including its HPLC chromatogram.
How a lot gets released
Synthesis
Peptides are assembled residue by residue using solid-phase peptide synthesis.
Purification
Preparative HPLC removes truncated and side-product sequences, then the peptide is lyophilized and sealed.
Analysis
Analytical HPLC measures the purity of every lot before release.
Release
Lots that meet specification are released with a certificate of analysis under their lot number.
Reading a COA
HPLC purity
Liquid chromatography separates a sample into its components. Purity is the target peptide’s peak area as a share of all detected peaks.
Lot traceability
Each COA belongs to one lot. Check that the lot number on the certificate matches your order before you start work.
Vial sizes
Fill is stated on every label. Products offered in more than one size are tested and certified by lot for each size.
Questions about a result
Email support@aminograde.com with the product, vial size, and lot number.