flocculant price

Selecting the correct flocculant depends primarily on the ionic charge of the particles in your wastewater. Anionic Polyacrylamide (APAM) is typically used for inorganic minerals and negatively charged particles, such as in mining or metallurgy. Cationic Polyacrylamide (CPAM) is essential for organic sludge treatment and municipal sewage. Non-ionic (NPAM) is preferred for acidic wastewater. You must request a beaker test (jar test) from the supplier to determine the optimal molecular weight (ranging from 5 to 22 million) and degree of hydrolysis for your specific liquid-solid separation needs.

Buyers should prioritize products with a solid content of ≥88% and a residual monomer content of ≤0.05%. Ensure the supplier complies with ISO 9001 for quality management and ISO 14001 for environmental management. For drinking water treatment, the product must meet NSF/ANSI Standard 60 or equivalent food-grade certifications to ensure safety and non-toxicity.

High-quality flocculants should have a dissolution time of 40 to 60 minutes. If the powder takes too long to dissolve, it creates 'fish eyes' (undissolved lumps) that clog dosing pumps and waste chemicals. Look for granule consistency; uniform particle sizes between 20-80 mesh ensure stable dissolution and prevent dust hazards in the workspace.

Flocculant prices are highly sensitive to the cost of raw materials like Acrylonitrile. Prices are usually quoted per metric ton. To optimize cost-efficiency, evaluate the effective dosage rather than just the unit price; a high-purity flocculant that requires 30% less dosage is more economical than a cheaper, low-grade alternative. Bulk orders exceeding 10 tons typically qualify for significant discounts.

The primary risk is moisture absorption during sea transit, which causes caking and renders the product unusable. Ensure the supplier uses moisture-proof PE inner bags inside PP woven outer bags. Another risk is specification mismatch; always verify the Certificate of Analysis (COA) for every batch before shipment to ensure the molecular weight matches your order.

Focus on long-term stability and sample consistency. Request a pre-shipment sample and state in the contract that the bulk cargo must match the sample's performance. Use Made-in-China.com's Secured Trading services to protect your payment until the goods pass third-party inspection (like SGS or Intertek) for active ingredient content.

While Polyacrylamide is generally classified as non-hazardous, you must obtain a Material Safety Data Sheet (MSDS) and a Certification for Safe Transport of Chemical Goods. Ensure the HS Code (usually 390690) is correctly declared to avoid customs delays. For shipping to regions with strict environmental laws, confirm the REACH registration (for EU) or TSCA compliance (for USA).

Conduct due diligence by checking the supplier's Business License and Export Qualification on Made-in-China.com. Prioritize Audited Suppliers who have undergone on-site factory inspections. Always use Letter of Credit (L/C) or Telegraphic Transfer (T/T) with a deposit and balance against B/L to mitigate financial risk.