| | | | Grade 1 | Grade 2 | Grade 3 | 1. | Minimum Neutralising Value (%) | | | 80 | 65 | 50 | 2. | Minimum Effective Neutralising Value (%) | | | 80 | 65 | 50 | 3. | Type of Liming Material | Calcite, burnt or hydrated lime | Minimum calcium | 30 | 30 | 20 | 4. | | | Minimum magnesium | - | - | - | 5. | | Dolomite or dolomite lime | Minimum calcium | 14 | 14 | 9 | 6. | | | Minimum magnesium | 9 | 9 | 6 | 7. | | Magnesite lime | Minimum calcium | - | - | - | 8. | | | Minimum magnesium | 18 | 18 | 12 |