20.20 2.06.2022 г.
ISO
ISO/TC 102/SC 2
Международен стандарт
The method ist applicable to a concentration range of 0,005 to 1,0 % (m/m) of fluorine in natural iron ores, and iron ore concentrates and agglomerates including sinter products. Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results, and test report. ISO 4693 includes three annexes.
ДЕЙСТВАЩ
ISO 4694:1987
ПРОЕКТ
ISO/WD 4694
20.20
Начало на разработване на работен документ
2.06.2022 г.