Research notes

Practical notes on peptide purity, independent testing and laboratory handling, written for the researchers working with our catalogue.

• How to read a certificate of analysis — A practical walkthrough of the sections that matter on a peptide certificate of analysis: identity, purity, the analytical method and the chromatogram.
• HPLC purity explained: what the percentage means — What a research peptide HPLC purity percentage actually measures, how it is calculated from peak area, and what a single percentage leaves out.
• Peptide identity and mass spectrometry — How mass spectrometry confirms the identity of a research peptide alongside HPLC purity, and why a purity figure alone cannot prove what a compound is.
• How to verify a peptide supplier's lab report — A checklist for checking a peptide certificate of analysis: independent hosting, batch matching, a visible method, and the red flags that mean you should walk away.
• Why peptide purity shapes experimental reproducibility — How batch-to-batch variation and hidden impurities in research peptides affect experimental reproducibility, and what to record so results can be repeated.
• Storing lyophilised research peptides — Practical guidance on temperature, light, moisture and freeze-thaw for storing lyophilised research peptides so a batch stays fit for use.
• Reconstituting research peptides with bacteriostatic water — A laboratory technique guide to reconstituting lyophilised research peptides with bacteriostatic water: choosing a solvent, technique, and storing the solution.
• Lyophilised vs reconstituted peptides — The difference between lyophilised and reconstituted research peptides, how each form behaves in storage, and when to reconstitute a batch.
• Buying research peptides in the EU: shipping and packaging — What to expect when ordering research peptides within the EU: dispatch times, tracking, packaging and the documentation that should travel with a batch.
• A glossary of research peptide terms — Plain-language definitions of the terms that appear on peptide certificates and product pages: HPLC, mass spectrometry, purity, batch, lyophilised and more.