Food grade diatomaceous earth

Food Grade DE must meet strict FCC (Food Chemicals Codex) or FDA (Food and Drug Administration) standards. Unlike industrial grade, it must contain less than 1% crystalline silica and be primarily composed of amorphous silica. It should be free from harmful levels of heavy metals like arsenic and lead, and must be processed without chemical additives.

Request a Certificate of Analysis (COA) for every batch. Key indicators include a silicon dioxide (SiO2) content of 85% or higher and a heavy metal profile that falls within food safety limits. Additionally, check for ISO 22000 or HACCP certifications, which indicate the supplier follows international food safety management systems.

It is widely used as a filtration aid in the beverage industry (beer, wine, and juices) to clarify liquids. In agriculture, it serves as an anti-caking agent for animal feed and a natural grain storage protector. It is also utilized in the pharmaceutical and cosmetic industries as a filler or absorbent due to its high porosity and purity.

Since DE is highly absorbent and prone to dusting, it should be packed in multi-wall paper bags with a PE (polyethylene) liner or moisture-proof PP woven bags. For bulk orders, palletization with shrink-wrapping is essential to prevent bag breakage and moisture ingress during sea freight.

This is a common risk as industrial DE is cheaper but toxic if ingested. Always request a pre-shipment sample and have it tested by a third-party lab like SGS or Intertek to confirm the crystalline silica content. Ensure the contract specifies that the goods must match the approved sample and the Food Grade certification provided.

Focus on tiered pricing based on volume; typically, orders exceeding 20 tons (a full 20ft container) can secure 15-25% discounts. Negotiate for customized mesh sizes (e.g., 200 mesh vs 325 mesh) at no extra cost, and request OEM packaging if you intend to resell under your own brand.

Check the HS Code (usually 2512.00) for import duties in your country. Ensure the supplier provides a Material Safety Data Sheet (MSDS) and a Non-DG (Non-Dangerous Goods) certificate to avoid delays at customs. For high-quality Chinese suppliers, platforms like Made-in-China.com offer verified manufacturer profiles to reduce sourcing risks.

Use Trade Assurance or Letter of Credit (L/C) for large transactions to ensure payment is only released upon proof of shipment. Conduct a factory audit or use the 'Audit Reports' available on Made-in-China.com to verify the supplier's production capacity and legal existence before sending any deposit.