Coal standards

Coal standards with carbon, sulfur, hydrogen and nitrogen certified. Some of listed CRMs have oxygen, chlorine and mercury certified as well.

Catalogue No.C%S%H%N%O%Cl%Hg ppm
AR277370.180.624.190.98(16.17)(0.0257)
AR277567.70.614.660.96(18.6)
AR277672.401.114.521.42(11.24)(0.0185)
AR277868.210.812.700.96(6.09)
AR278064.273.314.041.19(7.98)(0.121)
AR278173.072.404.771.50(10.18)
AR278261.814.963.911.13(3.58)
AR278372.320.542.030.90(3.24)(0.0224)
AR3701 sold out79.181.505.23(1.70)(0.1645)0.071
The value in parentheses is a non-certified parameter