- Description
- Product Features
Diamond K Premium 97 is a high-purity powdered gypsum ground finer than 325 mesh, delivering fully soluble calcium and sulfur for hydroponics, fertigation, and certified organic programs. OMRI listed and compliant with WSDA and California OIM organic certification requirements.
Key Specifications
- Calcium (Ca): 22%
- Sulfur (S): 17%
- Particle size: Finer than 325 mesh
- Form: Finely milled white powder, fully water soluble
- Package: 50 lb. bag
- OMRI Listed — certified for use in organic agriculture
- Nitrogen-free — ideal where N inputs must be controlled
Applications
- Hydroponics — Supplement calcium and sulfur in recirculating and drain-to-waste systems
- Drip & Fertigation — Fully soluble with no residue; safe for emitters and drip lines
- Foliar — Apply as a foliar calcium and sulfur source
- Certified Organic Programs — OMRI listed; compliant with USDA NOP, WSDA, and California OIM
- Soil Amendment — Improves soil structure and water infiltration
Documents
- Premium 97 Product Sheet
- Premium 97 Solubility Data
- Product SDS
- Product SDS – Spanish
- OMRI Listed Certificate
- California OIM Certificate 2024
- WSDA Organic Certificate 2024
- Premium 97 Silage Trial Data
- The Many Advantages of Gypsum
In Stock & Ready to Ship
Custom Hydro is an authorized U.S. stocking distributor of Diamond K Premium 97 — inventory on hand and ships fast.
- Pure: 97% Calcium sulfate dihydrate, the purest available on the market.
- Water Soluble: 97% passing 200 mesh and 92% passing 325 mesh means it goes into solution faster and more completely than other sources.
- Easy to use: Ultra-soluble calcium to replace and leach sodium in the soil.
Diamond K Premium 97 Powdered Gypsum 50 lb.
Diamond K Premium 97 Powdered Gypsum 50 lb.
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At the leading edge of the market, Custom Hydro stands out by providing the growing industry with fertilizers that are not only of premium quality but also feature innovative
solutions tailored for the unique needs of hydroponic and organic farming practices.
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