Alkalinity (pH) 6.0 – 8.0
Bulk density (kg/m³) 300 ± 100
Resting moisture (%) < 1.0
Rubber content (ppm) < 10
PVC content (ppm) < 75
Label content (ppm) < 15
Metal content (ppm) < 10
Polyolefins (PP, HDPE, LDPE) (ppm) < 10
Foreign particles or elements (ppm) < 5
Flake size – scale (mm): 70% between 4 – 12.5 mm
Fines (particles smaller than 2 mm) (%) < 2