| Typische waarden | |
| SiO2: | 99.95% | 
| Al2O3: | 140 ppm | 
| FE2O3: | 20 ppm | 
| Na2O: | 25 ppm | 
| K2O: | 25 ppm | 
| TiO2 | 16 ppm | 
| CAO: | 18 ppm | 
| MgO: | 10 ppm | 
| 8-5 mm | 5-3 mm | 3-1 mm | 1-0 mm | 
| 4-20 mesh | 50-100 mesh | 100-200 mesh | |
| 10-20 mesh | 20-40 mesh | 40-70 mesh |