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GRAIN SIZE DISTRIBUTION
Mesh size, mm Tolerance range, %
0.71 max. 0.5
0.50 max. 10.0
0.355 30.0 – 50.0
0.25 40.0 – 60.0
0.18 max. 10.0
0.125 max. 5.0
0.09 max. 1.0
0.063 max. 0.5
– 0.063 max. 0.1
Medium grain size, mm 0.32 – 0.36
Uniformity ratio, % min. 80
AFS number 40 – 45
CHEMICAL ANALYSIS
SiO2, % min. 98.50
Al2O3, % max. 0.50
Fe2O3, % max. 0.10
Loss on ignition, % max. 0.20