Објављен
A test portion is evaporated in a tared platinum dish and the residue is weighed after drying at 105 2 °C. The method is applicable to solutions containing not more than 35 % (m/m) ammonia.
ОБЈАВЉЕН
ISO 7109:1985
90.93
Одлука о потврђивању стандарда
14. 2. 2025.