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GRAIN SIZE DISTRIBUTION AND PHYSICAL CHARACTERISTICS
Measure unit Value
Residue > 0,250 mm % max. 10,0
Residue < 0,063 mm % max. 50,0
Medium grain size, d50 mm 0,06 – 0,15
Moisture content % max.  0,50
pH-value / 7,0±0,5
CHEMICAL ANALYSIS
SiO2 % min.95,00
Al2O3 % max.3,00
Fe2O3 % max.0,50
Loss on ignition % max.1,0