The Vault Journal

Lab Science

Analytical techniques, laboratory methods, testing concepts, and the documentation behind credible research.

Lab Science

What Does “99% Purity” Actually Mean?

A purity number can look definitive. Understanding what it actually tells you requires looking at the analytical method behind it.

By The Vault Journal Editorial Team · 7–9 min read

Lab Science

What Is HPLC? Understanding High-Performance Liquid Chromatography

HPLC separates components within a liquid sample so researchers can examine them individually. Learn how the technique works, what a chromatogram shows, and why understanding the analytical method matters.

By The Vault Journal Editorial Team · 6–8 min read

Lab Science

How to Read a Certificate of Analysis

A Certificate of Analysis contains more than a headline percentage. Learn how to evaluate batch information, analytical methods, specifications, results, reference standards, and traceability.

By The Vault Journal Editorial Team · 7–9 min read