QA
Guide section
Documentation & quality
Lab records, certificates of analysis, HPLC, mass spectrometry, purity terms and lot traceability.
- QA-01 Laboratory Documentation for Peptide Handling What to record from receipt to disposal so that any result can be traced back to the material behind it. Borrowing the useful parts of GLP…
- QA-02 Certificates of Analysis: What a COA Is and Is Not A COA reports test results for one specific lot. What a credible certificate contains, which tests matter for peptides, and the limits of what any COA…
- QA-03 Interpreting a COA: Reading the Numbers Line by Line A practical walk-through of a peptide certificate of analysis: matching the lot, reading the HPLC trace, checking the observed mass, and understanding what purity does and…
- QA-04 Analytical Testing Overview: Which Test Answers Which Question Identity, purity, content, impurities and contaminants each need a different method. A map of the analytical techniques used for peptides and what each one can and…
- QA-05 HPLC Explained: How Peptide Purity Is Measured How reversed-phase HPLC separates a peptide from its impurities, how to read a chromatogram, and why the reported purity depends on the method.
- QA-06 Mass Spectrometry Explained: Confirming Peptide Identity How mass spectrometry weighs a peptide, how to read charge states and adducts on a spectrum, and the difference between average and monoisotopic mass.
- QA-07 Purity Terminology: Purity, Content, Counterions and Impurities Purity, net peptide content, peptide impurities, counterions and water are separate measurements that are often confused. A plain-language guide to what each term means.
- QA-08 Lot Traceability: Connecting Results to Material Every vial, aliquot and result should trace back to a lot and its certificate. How to set up a simple traceability chain in a research lab…