Batch Numbers and Traceability in Reference Material Supply
Batch numbering ties a physical container back to its manufacturing history and test data. Here is how traceability systems work in practice.
18 October 2025 · 6 min
Quality, purity & analysis
Certificates of Analysis, analytical techniques and purity specifications — how laboratories verify what a reference material actually contains.
Understanding Purity Specifications for Reference Materials
Purity specifications set the boundaries a batch must fall within. This guide explains how these limits are defined and what the figures actually mean.
3 October 2025 · 6 min
HPLC, GC-MS and NMR Purity Testing Explained
HPLC, GC-MS and NMR are the three analytical techniques most commonly cited on Certificates of Analysis. Here is what each one actually measures.
25 September 2025 · 6 min
Certificate of Analysis Explained: How to Read a CoA
A Certificate of Analysis is the primary quality document accompanying a reference material. Here is what it should contain and how to interpret it.
12 September 2025 · 6 min