Sodium fluoride for industrial use — Determination of water-insoluble matter
NORMA vydaná dňa 1.12.1973
Označenie normy: ISO 2831:1973
Dátum vydania normy: 1.12.1973
Počet strán: 1
Približná hmotnosť: 3 g (0.01 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: The principle consists in dissolution of a test portion, separation of all insoluble matter by filtration of the solution by vacuum through a filter crucible, drying and weighing. Has also been approved by the IUPAC.