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How to Read a Certificate of Analysis
A Certificate of Analysis can look intimidating — a page of chromatograms, retention times, and numbers. But you don’t need to be an analytical chemist to tell a solid COA from a weak one. Here’s a field guide to the sections that matter. 1. Identity Start at the top: does the COA name the exact…
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Cold-Chain Storage and Peptide Stability: Why −20°C Matters
A peptide can leave the laboratory at 99% purity and arrive degraded if it’s handled carelessly in between. Peptides are sensitive molecules, and their integrity depends heavily on temperature, moisture, and physical form. This article explains why cold-chain storage matters and what good handling looks like. Why peptides degrade Peptides are chains of amino acids…
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What “Research Use Only” Means Under UK Law
“Research Use Only” (RUO) is a phrase you’ll see on every legitimate research compound, but it’s often treated as marketing boilerplate rather than what it actually is: a legal classification with real obligations on both seller and buyer. This article explains what RUO means within the UK regulatory framework. What “Research Use Only” means RUO…
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HPLC vs Mass Spectrometry: How Purity and Identity Are Verified
When a research peptide is described as “verified,” two analytical techniques usually sit behind that claim: high-performance liquid chromatography (HPLC) and mass spectrometry (MS). They answer different questions, and a credible verification process uses both. Here’s what each one actually does, in plain terms. HPLC: measuring purity High-performance liquid chromatography separates the components of a…
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What a Certificate of Analysis Actually Proves (and Why Supplier COAs Aren’t Enough)
A Certificate of Analysis (COA) is the single most important document attached to any research compound — yet it’s also one of the most misunderstood. A COA is only as trustworthy as the laboratory that issued it and the methods behind it. This article explains what a COA actually proves, and why a supplier’s own…