Notes from the bench
Handling guidance, analytical method explainers and sourcing standards — written for the people who actually pipette.
How to actually read a certificate of analysis
A COA is only useful if you know which numbers matter. Here is what each section on a peptide certificate is telling you — and the three things people most often misread.
◷ InfographicHPLC-UV and LC-MS answer different questions
Purity and identity are not the same property, and the two methods that measure them are not substitutes for one another.
▤ InfographicReconstitution practices that preserve your sequence
Shearing, oxidation and adsorptive loss all happen at the bench, after the material leaves our hands. A few habits prevent most of it.
◷ InfographicStorage, stability and what -20°C actually buys you
Lyophilised peptides are far more robust than people assume in transit, and far more fragile than people assume in solution.
▥ InfographicWhy batch-level COAs, not representative ones
A representative certificate describes a batch someone once made. It says nothing verifiable about the vial in your hand.
◈ InfographicWhat 'research use only' actually obliges you to do
The phrase is not marketing boilerplate. It describes a real and enforceable boundary on how these materials may be used.
▤ Infographic