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                ITEM  | STANDARD  | 
ASSAY (Na5P3O10)  | ≥95  | 
APPEARANCE  | WHITE GRANULAR  | 
P2O5  | ≥ 57.0  | 
FLUORIDE (PPM)  | ≤ 10  | 
CADMIUM (PPM)  | ≤1  | 
LEAD (PPM)  | ≤4  | 
MERCURY (PPM)  | ≤1  | 
ARSENIC (PPM)  | ≤3  | 
HEAVY MENTAL (AS PB) (PPM)  | ≤10  | 
CHLORIDES (AS CL)  | ≤0.025 %  | 
SULPHATES (SO42-)  | ≤0.4 %  | 
SUBSTANCES NOT DISSOLVED IN WATER  | ≤0.05 %  | 
PH VALUE  | 9.5% - 10.0%  | 
LOSS ON DRYING  | ≤0.7%  | 
HEXAHYDRATE  | ≤23.5%  | 
WATER-INSOLUBLE SUBSTANCES  | ≤0.1%  | 
HIGHER POLYPHOSPHATES  | ≤1%  |