SRM 2685c Bituminous Coal (Nominal Mass Fraction 5 % Sulfur)
This  Standard  Reference  Material (SRM)  is  intended  primarily  for  use  in  the  evaluation  of  techniques used  in  the analysis of coals and materials of a similar matrix.  A unit of SRM 2685c consists of 50 g of bituminous coal ground to pass a 250 ?m (60 mesh) sieve, homogenized, and packaged in an amber …