Water-Soluble NPK Fulvic Acid Fertilizer for Drip Irrigation and Fertigation
Buyer-facing sourcing candidate for a China-origin water-soluble compound NPK fertilizer positioned for drip irrigation, fertigation, and crop nutrition programs. The source listing indicates multiple NPK formulas, fulvic acid content options, 100% water solubility, pH 5.5–7.2, and packing in woven bags or neutral kraft bags. Buyers should confirm the exact formula, nutrient assay basis, chloride/biuret/heavy metal limits, solubility, particle size, and export documentation before RFQ or sample approval.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
CAS: Not applicable as a formulated fertilizer mixture; request CAS/EC references for individual declared components where required by destination marketWater-soluble compound NPK / fulvic acid fertilizer mixtureCandidate - requires formula-specific COA, SDS, and import compliance verification
CAS: Not applicable as a formulated fertilizer mixture; request CAS/EC references for individual declared components where required by destination market
HS Code: 310590 as stated by source listing; verify against final formula and destination customs classification
Appearance: Granular stated; powder and expanded granule options also shown in extracted specifications
Water solubility: 100% stated; request insoluble matter test result and filtration suitability for drip irrigation
pH: 5.5–7.2 stated; confirm test method and dilution ratio
Fulvic acid: 18%–40% stated in listing; other extracted options include 7%–10%, 30%–60%, and 90% depending on formulation, requiring formula-specific confirmation
Example formulas shown: 4-0-40, 20-5-20, 18-3-30, 28-5-5, and customized NPK formulas
Nitrate nitrogen: ≥10% NO3-N stated for one powder 28-5-5 formula; confirm nitrogen forms including nitrate-N, ammonium-N, urea-N, and total N
Application crops listed: vegetables, fruit, rice, sugarcane, and corn
Release type: Quick stated in source listing; product text also references longer fertilizer effect, so release behavior should be clarified
Chemical character: acidic/physiological neutral stated; confirm formula-specific pH and compatibility with irrigation water
Who uses this page
Target buyers
Fertilizer importers and distributors
Fertigation product formulators
Agricultural input wholesalers
Greenhouse and horticulture supply companies
Irrigation system service providers sourcing soluble fertilizer inputs
Large farms and plantation procurement teams requiring import-ready fertilizer lots
Before matching
Documents to check
CAS number, grade, assay, and impurity profile
SDS, COA, TDS, HS code, and transport classification
Destination-market import documents before supplier matching
Package and route
Packing notes
Stated transport package: woven bags or neutral kraft bags available
Listed specifications: 20 kg, 40 kg, or customizable packing
Confirm inner liner, moisture barrier, palletization, container loading quantity, and bag labeling language
For water-soluble fertigation products, request anti-caking condition, shelf-life statement, and storage-condition statement on COA/TDS
Confirm whether private label or neutral export packing is available and whether markings include NPK grade, net weight, batch number, origin, and production date
Applications and sourcing options
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Use context
Common applications
Drip irrigation fertigation programs where water solubility and low insoluble matter are required
Crop nutrition programs for vegetables, fruit, rice, sugarcane, and corn
Blended fertilizer sourcing where NPK grade and fulvic acid content are specified by buyer
Private-label fertilizer import projects requiring neutral or customized packing
Trial sample evaluation for solubility, nutrient assay, and local registration screening
How we compare
Sourcing options
Standard NPK grades listed by supplier such as 20-5-20, 18-3-30, 4-0-40, and 28-5-5
Granular, powder, or expanded granule format subject to formula confirmation
Fulvic acid level selection depending on target grade and price point
20 kg, 40 kg, or customized export packing
Supplier-stated customization for crop-specific formulas, subject to buyer specification and compliance review
Sample order available according to source listing; confirm sample COA and whether it matches production batch specification
Human review
Compliance notes
Request product-specific COA, TDS, SDS, label draft, and batch traceability documents before purchase
Confirm whether the product is registered or accepted as fertilizer in the buyer’s destination market; supplier claims should not be treated as regulatory approval
Check destination limits for heavy metals such as Cd, Pb, As, Hg, Cr, and Ni, especially for organic/fulvic acid fertilizer inputs
Confirm chloride, sodium, insoluble matter, moisture, biuret, and heavy metal specifications for drip irrigation compatibility and crop-safety assessment
Confirm component disclosure sufficient for customs, fertilizer registration, and import inspection where required
Verify DG status using the final SDS and formulation; many NPK fertilizers may be non-DG, but nitrate-containing blends or oxidizer classification must be checked case by case
Confirm export documentation availability: commercial invoice, packing list, COA, SDS, certificate of origin, phytosanitary/non-animal origin statement if requested, and customs HS support
No regulatory guarantee can be inferred from marketplace audit labels or supplier claims
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
Questions to confirm
What is the exact NPK grade required: 4-0-40, 20-5-20, 18-3-30, 28-5-5, or a custom formula?
Please provide a current COA showing total N, nitrate-N, ammonium-N, urea-N, available P2O5, soluble K2O, fulvic acid, organic matter, moisture, pH, and water-insoluble matter.
What is the test method for fulvic acid and organic matter, and are results reported on dry basis or as-is basis?
What are the guaranteed maximum levels for chloride, sodium, biuret, heavy metals, and insoluble matter?
Is the product fully soluble without sediment under typical fertigation dilution, and can you provide a drip-irrigation solubility or filtration test?
What is the particle size distribution for granular or powder grades?
Is the formulation nitrate-containing, and does the SDS classify it as non-DG or DG for sea/air transport?
Can you supply SDS, TDS, COA, label, certificate of origin, and export packing photos before shipment?
Checks before quote
Request product-specific COA, TDS, SDS, label draft, and batch traceability documents before purchase
Confirm whether the product is registered or accepted as fertilizer in the buyer’s destination market; supplier claims should not be treated as regulatory approval
Check destination limits for heavy metals such as Cd, Pb, As, Hg, Cr, and Ni, especially for organic/fulvic acid fertilizer inputs
Confirm chloride, sodium, insoluble matter, moisture, biuret, and heavy metal specifications for drip irrigation compatibility and crop-safety assessment
Confirm component disclosure sufficient for customs, fertilizer registration, and import inspection where required
Verify DG status using the final SDS and formulation; many NPK fertilizers may be non-DG, but nitrate-containing blends or oxidizer classification must be checked case by case
Confirm export documentation availability: commercial invoice, packing list, COA, SDS, certificate of origin, phytosanitary/non-animal origin statement if requested, and customs HS support
No regulatory guarantee can be inferred from marketplace audit labels or supplier claims
Next step
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.
