Chemical properties
| Sodium | Na20 (%m/md) | 0,003 |
| Potassium | K2O (%m/md) | 0,002 |
| Magnesium | MgO (%m/md) | 0,002 |
| Sulphate | SO4 (%m/md) | < 0,020 |
| Calcium | CaO (%m/md) | 0,020 |
| Lipinskigetal | 0.017 |
Engels Baksteen
Helden, Oeffelt
| Sodium | Na20 (%m/md) | 0,003 |
| Potassium | K2O (%m/md) | 0,002 |
| Magnesium | MgO (%m/md) | 0,002 |
| Sulphate | SO4 (%m/md) | < 0,020 |
| Calcium | CaO (%m/md) | 0,020 |
| Lipinskigetal | 0.017 |
