Potassium fertilizers
Water-Soluble SOP Price — Bulk Supplier 50% K2O Grade
Bulk price quote · Chloride-free fertigation grade · MOQ 300 MT · FOB/CFR/CIF
Key parameters — SOP Water Soluble
Full specification — SOP Water Soluble
- FOB
- CFR
- CIF
- Fertigation
- Greenhouse
- Orchards
Product overview — SOP Water Soluble
Buyers sourcing chloride-free potassium for drip and pivot systems request water-soluble SOP bulk price from a fertigation-grade supplier — this 50% K2O, 17% S grade dissolves completely at field concentrations in micronized crystalline form. Unlike granular SOP, the soluble grade is milled to tight particle-size limits so stock solutions remain clear and drip emitters stay free of sediment. Chloride stays below 1.5%, protecting tobacco, potato, grape, citrus and greenhouse crops that accumulate chloride to toxic levels under continuous fertigation.
Primary buyers include protected-culture growers running A/B fertigation systems in Spain, Morocco and the Gulf, export-oriented berry and vegetable producers in Chile and Peru, and liquid-fertilizer blenders formulating chloride-free potassium sources. The grade suits pivot and micro-sprinkler injection as well as subsurface drip on orchard replant programmes where soil salinity limits MOP use.
Full product details
Loading ports & logistics — SOP Water Soluble
Chloride-free soluble SOP ships in 25 kg double PE-lined crystalline bags or 1,000 kg FIBC with moisture-barrier liners, palletised into dry 20 ft and 40 ft containers from 300 MT. The micronized grade absorbs atmospheric moisture faster than granular SOP — containers are sealed immediately after stuffing with humidity indicators; warehouse storage at discharge must be dry and ventilated.
FOB from Black Sea and European soluble-potash mills. CFR/CIF to tobacco, potato, grape and citrus fertigation programmes — Valencia, Casablanca, Santiago, Cape Town — with container stuffing 200–400 MT/day. Lead time 10–20 days after contract and payment confirmation.
Packaging & documentation — SOP Water Soluble
Standard export pack: 25 kg PE-lined PP woven bags, palletized and stretch-wrapped for container loading. One-tonne FIBC big bags available for inland distribution hubs. Each lot ships with mill certificate of analysis (K2O, S, Cl, moisture, water insolubles), commercial invoice, packing list and full bill of lading set. SGS or equivalent pre-shipment inspection on request. HS classification 3104.30 — potassium sulphate.
FAQ — SOP Water Soluble
When should growers choose water-soluble SOP over granular SOP?
Water-soluble SOP is the right grade for drip, pivot and sprinkler fertigation where nutrients must dissolve completely before reaching emitters. Granular SOP suits broadcast and bed application on field crops; the soluble grade commands a premium but eliminates sediment in stock tanks and clogged drip lines.
What mixing conditions ensure full dissolution of soluble SOP?
Use irrigation water above 20°C and allow 15–30 minutes of agitation in the stock tank. At 10°C dissolution slows noticeably — pre-warm concentrate tanks in greenhouse operations or split dosing across two irrigation cycles on cold mornings.
Can water-soluble SOP replace potassium nitrate in fertigation programmes?
SOP supplies potassium and sulphur without nitrate, making it ideal during fruit ripening when excess nitrogen delays sugar accumulation. Programmes that need both nitrate and potash should alternate KNO₃ and soluble SOP by growth stage rather than substituting one for the other year-round.
