Guides for chemical buyers & lab teams
Grades, documentation, regulation, logistics and lab maths — written by chemists for procurement, QC and R&D teams.
Shipping Dangerous Goods: UN Numbers, Packing Groups, IMDG
Most laboratory and industrial chemicals are regulated for transport. Learn how classification, UN numbers, packing groups and packaging fit together.
4 min readGuidesIncoterms 2020 for Chemical Exports: EXW, FOB, CIF, DAP
The Incoterm on a chemical quotation decides who pays, who insures and who carries the risk. Here is how the main terms compare, with dangerous goods in mind.
5 min readGuidesWhat Is a CAS Number and How the Check Digit Works
The CAS number is the most reliable way to specify a chemical. Learn how it is structured, what it does and does not identify, and how to validate one.
4 min readGuidesHow to Read a Certificate of Analysis (COA)
A Certificate of Analysis tells you what was tested on your lot and what the results were. Here is how to read one critically, field by field.
4 min readGuidesAR vs LR vs GR Grade Chemicals: What's the Difference?
Grade names on reagent bottles decide how much you pay and whether your result can be trusted. Here is what AR, LR, GR and related grades actually mean.
5 min read