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Notes on documentation, handling and analysis from the bench.
What a lot number is actually for
Why a purity figure without a lot number is a claim about a product family, and what has to be true for traceability to mean anything.
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Cold chain, moisture and the space between courier and freezer
What lyophilisation removes, why storage sits around -20 °C, and the handling errors that undo it before a vial is ever opened.
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How to read a certificate of analysis
Purity, peptide content, identity confirmation and the chromatogram. What each line on a COA measures, and which ones are worth arguing about.
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