2 Va. Admin. Code § 5-410-20
A. Agricultural liming materials shall be labeled to show a minimum Calcium Carbonate equivalent as listed below:
| Material | Calcium carbonate equivalent | |
| Burnt lime | not less than 140% | |
| Hydrated lime | Not less than 110% | |
| Limestone | Not less than 85% | |
| Shells | Not less than 85% | |
| Burnt Shell | Not less than 100% |
§ 3.2-3701 of the Code of Virginia.
Derived from VR115-04-11 § 2, eff. May 28, 1986.