Understanding Peptide Purity: What 99% Does and Doesn’t Tell You
A purity figure is a chromatographic ratio, not a statement about everything in the vial. What the number measures, what it leaves out and how to read it.
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What Is HPLC and How Does It Measure Peptide Purity?
HPLC separates a peptide from its impurities on a column and reports the result as a chromatogram. Here is how it works and how to read one on a COA.
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