Each coal was air dried, reduced in size to <0.2mm, homogenized and packaged into individual bottled units.
Table 1 Certified values and Uncertainty for coal July-01-2021 to June -30-2022
Certified Value& Uncertainty
Gross Calorific Value
H d /%
True Relative Density (20℃) *
Characteristic of Char Residue*（CRC）