Humic acid powder price manufacturers

When sourcing Humic Acid Powder, the most critical metrics are Humic Acid content (typically 50%-70%), Fulvic Acid content, and Water Solubility. For agricultural drip irrigation, you must ensure 100% water solubility to prevent nozzle clogging. Additionally, check the pH value (usually 8-10 for potassium humate) and moisture content (below 15%) to ensure product stability and ease of application.

The price is heavily influenced by the source material. Leonardite-based humic acid is considered premium due to its high biological activity and geological maturity compared to lignite (brown coal). Buyers should request the source origin; products derived from high-grade Leonardite command a higher price but offer superior cation exchange capacity (CEC) and better soil conditioning results.

To ensure the product is suitable for organic farming, look for OMRI (Organic Materials Review Institute) listing or REACH compliance for the EU market. Suppliers should provide a Certificate of Analysis (COA) for every batch and a Material Safety Data Sheet (MSDS). For specific markets, verify that heavy metal concentrations (like Arsenic, Lead, and Cadmium) fall within the legal limits of the destination country.

Request a small sample (1-2kg) to conduct a solubility test and a flocculation resistance test (especially if mixing with hard water or other fertilizers). Professional buyers often use UV-Vis spectroscopy reports provided by third-party labs to confirm the actual humic substance concentration, as visual inspection cannot distinguish between high-quality humate and crushed coal dust.

Adulteration with coal dust is a common risk. Always use Trade Assurance services on Made-in-China.com to protect your payment. Insist on a pre-shipment inspection (PSI) by agencies like SGS or Intertek to verify that the chemical composition matches the proforma invoice before the balance is paid.

Price in the chemical industry is highly sensitive to raw material costs and energy prices. Negotiate based on volume tiers (e.g., 20ft FCL vs. LCL). You can often achieve a 5-10% discount by committing to an annual volume contract rather than one-off spot purchases. Also, clarify if the quoted price is FOB (Free on Board) or CIF (Cost, Insurance, and Freight), as shipping heavy powders can significantly impact the landed cost.

Humic acid powder is sensitive to moisture. Ensure the supplier uses moisture-proof packaging, typically 25kg PP bags with an inner PE liner, or 1000kg jumbo bags for industrial use. Request pallets with shrink-wrap to prevent bag breakage during transit and facilitate easy unloading at your warehouse.

Check the HS Code (typically 382499 or 310590) against your country's tariff schedule. Some regions impose anti-dumping duties on specific chemical imports. Furthermore, ensure the supplier provides a Generalized System of Preferences (GSP) Certificate of Origin if applicable, which can help you reduce or eliminate import customs duties.