Understanding HPLC purity on a Certificate of Analysis
What the chromatogram, retention time and purity percentage on a COA actually tell you.
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Category: Quality & Testing
What peptide purity means — and why ≥99% matters in research
How impurities arise during synthesis and why high purity improves reproducibility.
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Mass spectrometry in peptide identity testing, explained
How ESI-MS confirms that a batch contains the molecule on the label.
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