anhydrous, powder, ≥99.99% trace metals basis
reagent grade, 97%
≥99.9% trace metals basis
puriss. p.a., ACS reagent, crystallized, 98.0-102% (RT)
ACS reagent, 97%
reagent grade, ≥98%, chunks
puriss. p.a., reag. Ph. Eur., ≥99%