Manganese and chromium ores — Experimental methods for evaluation of quality variation and methods for checking the precision of sampling
NORMA vydána dne 20.11.1986
Označení normy: ISO 8542:1986
Datum vydání normy: 20.11.1986
Počet stran: 9
Přibližná hmotnost: 27 g (0.06 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: Specifies experimental methods for the evaluation of quality variation of manganese and chromium ores, whether natural or processed, for the purpose of defining sampling procedure by the mass-basis systematic method and the two-stage method as specified in the relevant International Standards. It also specifies methods for checking the precision of sampling by the mass-basis systematic method and the two-stage method.