Објављен
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.
ОБЈАВЉЕН
ISO 2831:1973
90.93
Одлука о потврђивању стандарда
29. 11. 2023.
Natrijum-fluorid, tehnički - Određivanje sadržaja materija nerastvorljivih u vodi - Gravimetrijska metoda
95.99 Повучен