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Category: Quality & Testing

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QUALITY &AMP; TESTING

HPLC vs. Mass Spectrometry: How Research Peptides Are Verified

HPLC and mass spectrometry answer two different questions about a peptide. Understanding what each one measures makes any COA easier to read.

3 min read Jun 16, 2026

QUALITY &AMP; TESTING

Reading a Peptide Certificate of Analysis: Identity, Purity and Net Content

A Certificate of Analysis is the single most useful document for verifying a research peptide lot. Here is how to read every line of one.

3 min read Jun 16, 2026