Research
Research Guides
How to Read a Peptide Certificate of Analysis (COA)
What each field on a peptide certificate of analysis means: lot number, HPLC purity, mass spec identity, test date and lab, and how to match a COA to a vial.
Read the guideHow to Store Lyophilized Peptides: Temperature, Moisture and Light
Laboratory storage guidelines for lyophilized peptides and peptide solutions: freezer temperatures, desiccation, light, freeze-thaw cycles and oxidation-prone residues.
Read the guidePeptide Purity Testing: HPLC, Mass Spec and Net Peptide Content
How peptide purity and identity are tested: HPLC area-percent purity, mass spectrometry identity, and why net peptide content is a separate number.
Read the guideWhat Does Lyophilized Mean? Freeze-Dried Peptides Explained
Lyophilized means freeze-dried. How lyophilization works (freezing, primary and secondary drying), why freeze-dried peptides are more stable, and how to store them.
Read the guideThird-Party vs In-House Peptide Testing: What to Look For
What third-party peptide testing means, how it differs from in-house testing, what ISO/IEC 17025 accreditation shows, and how to check a lab report against your lot.
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