Calpril - Calcium Carbonate (Limestone)
Calpril is made of calcium carbonate (limestone) which is crushed to a very fine powder: 100% will pass a 30-mesh screen; 70% will pass a 100-mesh screen; and more than 35% will pass a 325-mesh screen. The powder is then constituted into spherical granules held together with a binding agent. These granules are then sized to a maximum of 4-mesh and a minimum of 14-mesh.
The binding agent used to make Calpril is highly water-soluble. Consequently, as soon as Calpril granules come into contact with water, disintegration of the granule begins, and the many small particles which comprise the granule are released into the surrounding soil water medium and the reaction to correct soil pH begins. For best results, store in a dry location.
Calpril is 100% natural and is listed by the Organic Materials Review Institute (OMRI), as well as Washington State Department of Agriculture (WSDA) Organic, for use in organic crop production.
- Adds calcium
- Raises soil pH
- Reduces excess aluminum, iron, and manganese
- Improves efficiency of potassium
- Increases available phosphorus and molybdenum
OMRI Organic Materials Review Institute Certification (PDF)
Material Safety Data (PDF)