KMS UltraFines Potassium Magnesium Sulfate — 4 lb

KMS UltraFines is a natural, OMRI-certified source of three essential plant nutrients — 22% potassium (K), 11% magnesium (Mg), and 22% sulfur (S) — in a single, ultra-fine particle size optimized for rapid dissolution in water. Derived from langbeinite, a naturally occurring mineral, KMS delivers all three nutrients simultaneously in immediately plant-available sulfate forms.

One gram dissolved in one gallon of water yields 48 ppm potassium, 29 ppm magnesium, and 58 ppm sulfur — making KMS UltraFines ideal for precision hydroponic and fertigation programs where accurate nutrient ratios are critical.

Key Features

• 22% potassium (K) — chloride-free potassium source; safe for sensitive crops
• 11% magnesium (Mg) — essential for chlorophyll production and enzyme activation
• 22% sulfur (S) — sulfate form; immediately plant-available
• Ultra-fine particle size — rapid, complete dissolution with no residue
• OMRI certified organic — approved for use in certified organic production
• Reclosable container — resealable 4 lb container for easy storage

Applications

• Hydroponic and soilless nutrient programs
• Fertigation and drip irrigation systems
• Magnesium and sulfur supplementation in K-P-K programs
• Organic crop production (OMRI certified)
• Chloride-sensitive crops — berries, cannabis, tobacco, vegetables

Specifications

• Analysis: 0-0-22 + 11% Mg + 22% S
• Potassium (K): 22% | Potassium (K₂O): 26%
• Magnesium (Mg): 11%
• Sulfur (S): 22% sulfate
• Dilution: 1g/gallon yields 48 ppm K, 29 ppm Mg, 58 ppm S
• Grade: UltraFines
• Certification: OMRI Listed for organic use
• Size: 4 lb reclosable container
• Country of Origin: USA
• SKU: KMS-ULTRAFINES-4lb

Documentation

• OMRI Certificate
• Product Specifications
• Safety Data Sheet