March 18, 2025 · 5 min read

HPLC purity: why ≥99% matters

What HPLC-certified purity means and why it is key for reproducible research.

High-performance liquid chromatography (HPLC) separates the components of a peptide sample and quantifies the purity of the final product.

≥99% purity means less than 1% of the sample corresponds to truncated, oxidized or synthesis-related impurities — a minimum requirement for experimental reproducibility.

Every Peptide Life batch includes a COA with verifiable HPLC chromatogram and mass spectrum.

Want to go deeper? Browse our catalog or contact us.

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