Notes
Research notes
Documentation, methods, and procurement practice — written for laboratory buyers, not for clinical use.
Documentation
How to read a peptide Certificate of Analysis
What HPLC purity, mass-spec identity, and lot numbers actually tell a laboratory buyer — and what they do not.
Sep 4, 2026
Methods
HPLC and mass spectrometry — why both
Purity without identity, or identity without purity, is an incomplete picture of a research lot.
Aug 21, 2026
Handling
Storing lyophilized peptides in the laboratory
Freeze-dried research peptides are stable when kept dry, dark, and cold. Reconstitution starts a different clock.
Aug 2, 2026
Quality
Why batch tracking matters in procurement
If a result cannot be tied to a lot, it cannot be defended. Batch tracking is the minimum for research-grade supply.
Jul 18, 2026