Research Report RR:D05-1020
An interlaboratory study was conducted by twelve laboratories testing twelve coal samples to establish a precision statement for test methods D5865, D3173, D3174 and D4239.
D5865-13 Standard Test Method for Gross Calorific Value of Coal and Coke
D4239-17 Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion
Committee D05 on Coal and Coke
Subcommittee D05.21 on Methods of Analysis