Notes from the bench, not the brochure.
Short, practical notes on the paperwork and the material handling around research peptides, reading a certificate of analysis, and storing lyophilized vials. Nothing here describes what any compound does.
What HPLC purity, MS identity, lot numbers and a 'pending' status each mean on a COA, and which fields to check before a vial reaches the bench.
6 min readUpdated 14 Aug 2026Bench operationsStorage and handling of lyophilized peptides in the laboratoryTemperature ranges, light and moisture exposure, freeze-thaw cycles, and what to record when a shipment of lyophilized material arrives.
5 min readUpdated 14 Aug 2026Lab documentationWhy a purity figure means nothing without a lot numberA percentage describes one batch on one day. Without the batch it was measured on, it is a marketing number rather than a result.
5 min readUpdated 18 Aug 2026Analytical methodsHPLC and mass spectrometry: what each test actually answersPurity and identity are two separate questions. One test cannot answer both, which is why a certificate normally carries both.
6 min readUpdated 18 Aug 2026Bench operationsReceiving and logging a research shipmentWhat to check on arrival, what to write down, and why the record matters more than anyone expects it to six months later.
5 min readUpdated 18 Aug 2026ComplianceWhat research use only means, and what it rules outThe phrase is a legal classification of the material and its permitted handling, not a disclaimer bolted onto a product page.
4 min readUpdated 18 Aug 2026For research use only. Not for human consumption.