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GRAIN SIZE DISTRIBUTION
Mesh size, mm Tolerance range, %
0.71 max. 0.5
0.50 max. 2.0
0.355 max. 10.0
0.25 20.0 – 40.0
0.18 30.0 – 40.0
0.125 10.0 – 30.0
0.09 max. 8.0
0.063 max. 1.0
bottom max. 0.5
Medium grain size, mm 0.20 – 0.25
Uniformity ratio, % min. 60
AFS number 55 – 65
CHEMICAL ANALYSIS
SiO2, % min. 97.00
Al2O3, % max. 1.50
Fe2O3, % max. 0.25
Loss on ignition, % max. 0.25