Technical notes
Practical guidance from our laboratory team on choosing grades, running methods and handling aggressive chemistry safely.
Technical note
Karl Fischer: volumetric or coulometric?
A practical rule: coulometric below about 1% water, volumetric above it. Here is why, and what goes wrong at the boundary.
Purity Fine Laboratory14 Sept 2026 2 min read
Technical noteWhich trace-metal acid grade do you actually need?
ACS, TraceGrade, 1 ppb, 100 ppt, 10 ppt - the ladder is about the blank you can tolerate, not about the assay on the label.
Purity Fine Laboratory14 Sept 2026 2 min read