November 8, 2026 · 6 min read
Labels describe what a vial should contain. Here is what HPLC purity and identity testing can confirm about what you bought, and how to send it in.
Read article →November 8, 2026 · 6 min read
What a figure like 98% purity measures, why it is relative to what the detector sees, and why purity is not the same as quantity.
Read article →October 16, 2026 · 6 min read
Learn how to read a certificate of analysis field by field, from sample ID to HPLC purity, and what a COA does and does not tell you.
Read article →October 16, 2026 · 6 min read
Why QR codes and logos cannot prove a COA is genuine, and how checking the PDF file hash catches altered certificates. Try our verifier.
Read article →October 16, 2026 · 6 min read
How to read an HPLC chromatogram: retention time, peak area, baseline and area-percent purity, plus what a chromatogram cannot show.
Read article →October 16, 2026 · 6 min read
HPLC vs mass spectrometry: how retention time, UV response and mass data answer different questions, and why the two are often paired.
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