All agricultural liming materials shall be classified and labeled in terms of fineness and calcium carbonate equivalent with no less than the following minimum fineness and minimum calcium carbonate equivalent standards. All landplaster offered for sale or distribution shall meet minimum labeled guarantees for calcium and sulfur.
1. Pulverized Mesh Screen | Minimum Guaranteed to Pass |
20 | 95% |
100 | 75% |
2. Standard Ground Mesh Screen | Minimum Guaranteed to Pass |
10 | 90% |
50 | 50% |
100 | 25% |
3. Coarse Ground Mesh Screen | Minimum Guaranteed to Pass |
10 | 90% |
50 | 40% |
100 | 25% |
Material | Calcium Carbonate Equivalent |
Burnt lime | Not less than 140% |
Hydrated lime | Not less than 110% |
Shells | Not less than 85% |
Limestone | Not less than 85% |
Limestone (75% neutralizing value) | Not less than 75% |
Industrial slag | Not less than 50% |
S.C. Code Regs. § 27-180