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Index Name

Index

cmethylene blue adsorption strength ≥ml/0.1g

11

quinine sulfate adsorption strength ≥mg/g

120

PH range ≤%

4.5-7.5

chloride ≤%

 0.10

sulfate ≤%

 0.05

Zinc salt≤%

0.005

Total somof iron ≤%

0.10

Heavy metal≤%

0.003

Acid soluble substance ≤%

 0.8

residue on ignition ≤%

 2.5

drying shrinkage ≤%

10

sulfide

No color change

cyanide

No color change

Residual carbonized substance

No higher than standard