Activated bleaching earth

When evaluating Activated Bleaching Earth (Fuller's Earth), you must focus on Decolorizing Efficiency, which should typically be above 90% for high-quality grades. Key physical parameters include Particle Size (typically 200 mesh pass rate >90%), Free Moisture content (ideally 8-12%), and Acidity (Free Acid <0.2%). For edible oil refining, the pH value should be maintained between 3.0 and 5.0 to ensure optimal adsorption without causing oil degradation.

The choice depends heavily on the target oil. For Edible Oil Refining (such as palm, soybean, or sunflower oil), you require a food-grade product that effectively removes chlorophyll, carotenoids, and phosphatides. For Industrial Lubricant Recycling or Mineral Oil Purification, the focus shifts to removing heavy metals, oxidation products, and odors. Always ensure the supplier provides a specific grade tailored to your industry to avoid excessive oil loss during the filtration process.

For food-related applications, the supplier must hold ISO 22000 or HACCP certifications. It is critical to verify that the product meets Food Chemicals Codex (FCC) standards. Additionally, ensure the supplier provides a comprehensive Material Safety Data Sheet (MSDS), as the fine dust particles can be a respiratory hazard, and the product must be handled according to international safety protocols during transit and storage.

Look beyond the price per ton and calculate the Oil Retention Rate. High-quality bleaching earth has lower oil retention (typically less than 4%), which saves significant costs in the long run by reducing oil loss. Request lab-scale samples to conduct a 'Bleaching Test' to determine the minimum dosage required to achieve your desired color index, as a lower dosage of a premium product is often more cost-effective than a high dosage of a cheap one.

The biggest risk is Moisture Absorption during sea transit, which significantly reduces bleaching activity. Ensure the supplier uses moisture-proof PP/PE woven bags with inner liners. Another risk is Quality Inconsistency between batches; therefore, you should mandate Pre-shipment Inspection (PSI) by third parties like SGS to verify the decolorizing power before the balance payment is made.

Focus on Tiered Pricing based on annual volume rather than a single spot order. Ask for OEM packaging options if you are a distributor. To ensure transaction security, prioritize suppliers with the 'Audit Finished' badge on Made-in-China.com, and utilize Secured Payment services to protect your funds until the goods are verified against the agreed specifications.

Activated Bleaching Earth is generally classified as Non-Hazardous, but its fine powder nature requires strict stowage away from heat and moisture. When shipping to regions with high humidity, consider using desiccants inside the container. For large-scale industrial buyers, FCL (Full Container Load) is highly recommended to prevent cross-contamination with other chemicals often found in LCL shipments.

Verify the HS Code (typically 3802.90) to check for specific import duties or anti-dumping duties in your country. Ensure the Certificate of Origin is provided to take advantage of any Free Trade Agreements (FTAs). For European markets, confirm if the supplier's product is REACH compliant to avoid customs clearance delays.