Protassium+ Organic Sulfate of Potash 0-0-50 Standard Fines — 50 lb
Protassium+ is the only OMRI-certified organic sulfate of potash (SOP) produced naturally through solar evaporation at the Great Salt Lake, Utah. With 50% soluble potash (K₂O) and 17% sulfate sulfur, Protassium+ delivers two critical plant nutrients in a single, chloride-free, naturally derived product — accepted for use in certified organic farming in the United States for more than 30 years.
Standard Fines are fine-screened for rapid dissolution in liquid fertilizer solutions, fertigation systems, and hydroponic nutrient programs. No animal manure or waste products are used in production. The solar evaporation process generates no toxic waste and safely returns water drawn from the Great Salt Lake back to it.
Key Features
- 50% soluble potash (K₂O) — high-analysis potassium source for efficient nutrient delivery
- 17% sulfate sulfur — immediately plant-available sulfur; supports protein synthesis and enzyme activation
- OMRI certified organic — accepted for use in certified organic production systems for 30+ years
- Chloride-free — low chloride (max 0.8%); safe for chloride-sensitive crops
- Fine-screened — rapid dissolution for liquid blends, fertigation, and hydroponic systems
- Naturally produced — solar evaporation at the Great Salt Lake; no toxic waste; environmentally responsible
- Ecocert attested — additional third-party organic certification
Applications
- Hydroponic and soilless nutrient programs
- Fertigation and drip irrigation systems
- Organic crop production (OMRI certified)
- Chloride-sensitive crops — berries, potatoes, tobacco, vegetables
- Liquid fertilizer solution and suspension blending
Specifications
- Analysis: 0-0-50 + 17% S
- Soluble Potash (K₂O): 50%
- Sulfur (S): 17% combined sulfate
- Chlorine (Cl) max: 0.8%
- Derived from: Potassium Sulfate
- Grade: Standard Fines
- Certification: OMRI Listed | Ecocert | CDFA Registered
- Size: 50 lb
- Brand: Protassium+ (Compass Minerals)
- Country of Origin: USA (Ogden, Utah)
- SKU: PROTASSIUM+STAND-FINES-50lb
Documentation
- High Analysis: Guaranteed Analysis 0-0-50 with 18% sulfur
- OMRI Listed: This organic-listed form of Protassium+ premium sulfate of potash meets the requirements for organic use under the U.S. National Organic Program, and is certified by both the Organic Materials Review Institute (OMRI) and the California Department of Food and Agriculture (CDFA). It is also approved by Ecocert for use in Organic Agriculture production conforming to the Canadian Organic Standard
- Pure: Low in chloride, sodium and heavy metals.
- Water Soluble: STANDARD FINES SOP ORGANIC is fine screened for rapid dissolution in making liquid fertilizer solutions and suspensions.
GUARANTEED ANALYSIS
Soluble Potash (K2O)….........................50%
Sulfur (S)................................................17%
17% Combined Sulfur
Derived From: Potassium Sulfate
Chlorine (Cl) (Max)…............................0.8%
Protassium+ Organic SOP 0-0-50 Standard Fines | 50 lb
Protassium+ Organic SOP 0-0-50 Standard Fines | 50 lb
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