Objavljen
ISO/TR 4277:2009 describes a conventional test for the evaluation of the free fluorides content of natural, artificial and recovered cryolite.
This method is applicable to products having free fluorides content greater than 0,15 % (mass fraction) of AIF3 or 0,4 % (mass fraction) of NaF.
OBJAVLJEN
ISO/TR 4277:2009
60.60
Standard objavljen
21. 10. 2009.