Bl This standard establishes the methods of extraction of refractory materials (bricks and other pieces, earth, etc.) intended for chemical analysis and other tests. B-2 Since it is a general rule of procedure, it must be applied in correspondence with the particular rules, in which different quantities of samples to be extracted may be established based on the number and nature of the determinations to be made.
IRAM 12 503-1957 history
1957IRAM 12 503-1957 Refractory chemical analysis and other sample extraction for trial purposes