FlowSOP53
High-Purity Potassium with Ultra-Low Chloride for Sensitive Crops
FlowSOP53 is Exzeler’s highest-grade sulphate of potash (K₂SO₄), delivering a potent 53% K₂O (44.5% elemental K) and 45% SO₃ (18% elemental sulfur) in a fully water-soluble microgranular form. Produced via the Glaserite process using natural raw materials (Glauber’s salt), FlowSOP53 offers exceptional solubility, ultra-low chloride content (≤0.2%), and is permitted for organic farming under EU Regulation (EU) 848/2018 and (EC) 889/2008.
FlowSOP53 is specifically designed for high-value, chloride-sensitive crops like fruits, vegetables, flowers, and greenhouse systems. It is ideal for use in fertigation, foliar applications, and as a raw material in high-quality NPK blends.
Key Benefits
- Maximum Potassium Power
53% water-soluble K₂O ensures efficient energy metabolism, sugar transport, and yield formation.
- Balanced Sulfur Nutrition
45% SO₃ provides elemental sulfur to enhance amino acid synthesis and protein formation.
- Chloride-Safe Formula
With just 0.2% Cl, FlowSOP53 protects salt-sensitive crops like berries, grapes, citrus, florals, and greenhouse vegetables.
- 100% Solubility
Superior dissolution at 116 g/L ensures clean fertigation with no clogging or sedimentation.
- Organic Compliant
Produced using a certified process; safe for organic and regenerative farming systems.
Application Guidelines
Fertigation
- Rate: 5–10 kg/ha per application depending on crop stage
- Method: Dissolve directly in fertigation tanks or mix with other water-soluble nutrients
- Timing: Vegetative growth, flowering, fruit filling, ripening
Foliar Spray
- Dose: 2–4 kg/ha at 0.2–0.4 %
- Concentration: 0.2–0.4 % solution (200–400 g per 100 L)
- Purpose: Boost sugar transport, fruit firmness, and stress resilience
NPK Raw Material
- High-purity grade suitable for premium NPK production (WS-NPK, MKP-based blends)
Compatibility & Handling
Storage & Handling
- Store in a cool, dry, and ventilated space
- Keep packaging tightly sealed to avoid moisture exposure
- Avoid contact with acidic fertilizers in dry form
- Always stir until fully dissolved before fertigation
Recommended Crops
| Crop Group |
Application Role |
| Fruits & Orchards |
Fruit fill, color improvement, shelf-life extension |
| Vegetables |
Bulking, flavor enhancement, nitrate balance |
| Floriculture |
Color expression, stem strength, flower quality |
| Greenhouse Crops |
Chloride-free potassium for sensitive root systems |
| Cereals & Oilseeds |
Improved K:S balance for protein and oil content |
Why Choose FlowSOP53 from Exzeler?
With its extreme purity, organic certification, and zero-compromise solubility, FlowSOP53 sets a new benchmark for potassium nutrition. Whether you’re targeting sensitive crops, premium fertigation programs, or clean-label NPK production, FlowSOP53 delivers unmatched reliability and quality from the first drop to the final harvest.
FlowSOP53: Potassium at its Purest. Performance at its Peak.
