ASTM D5003 Standard Test Method for Hardgrove Grindability Index (HGI) of Petroleum Coke
9. Precision and Bias
9.1 Precision - The statements for repeatability and reproducibility for petroleum coke and calcined petroleum coke are being developed following RR:D02-1007.
9.2 Bias - The procedure in this test method has no bias because the value of the hardgrove grindability index can be defined only in terms of the test method.
10. Keywords
10.1 coke; grindability; petroleum coke
