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PEPerchini Scientific

Literacy tool

Interactive chromatogram walkthrough

Learn the labels on HPLC purity reports before you archive a lot certificate. Educational schematic only — research use only.

Companion: HPLC testing explained·Understanding COAs·Fake COA red flags·Chromatogram (glossary)
Interactive schematic HPLC chromatogramEducational schematic of detector signal versus retention time. Step1 of 8: Start here: this is a teaching schematic. Not a real Certificate of Analysis.Schematic chromatogram (educational)Not a real COA or instrument output — labels onlyBaselineRetention time →Detector signal →Impurity peakImpurity peakMain peakRetention timeIntegration estimates peak areas under method rules — purity % is method-dependent

Step 1 of 8

Start here: this is a teaching schematic

Walk through the labels you will see on laboratory HPLC reports. Nothing on this page is instrument output for a PEPerchini lot, and it must never be filed as a Certificate of Analysis.

Batch verification

Look up lot-linked certificates when they are published.

Research Vault

Archive context for lots — never replace a supplier PDF with a schematic.

This walkthrough is an educational aid for research organizations. It does not certify material quality, confer method validation, or authorize human or veterinary use. See the Research Use Only policy.