The distinction between food-grade and non-food-grade IBC totes is one of the most important concepts for anyone buying used or reconditioned containers. Getting this wrong doesn't just mean poor quality product — it can mean genuine health hazards for end consumers.
What Makes an IBC "Food Grade"?
A food-grade IBC tote meets two conditions:
1. Material composition: The HDPE bottle is manufactured from FDA 21 CFR 177.1520 compliant virgin polyethylene. This means the plastic itself contains no additives, colorants, or processing agents that could leach into food products.
2. Use history: The container has only been used to store food-grade products. A bottle made from food-safe plastic that later held industrial chemicals is NO LONGER food-grade, regardless of cleaning.
This second point is crucial: food-grade status depends on history, not just material. You cannot "restore" food-grade status to a container that has held non-food products through cleaning alone. Chemical absorption into HDPE is a real phenomenon, and trace amounts of absorbed chemicals can migrate into food products over time.
Common Food-Grade IBC Contents
Products that maintain food-grade status: - Fruit juices and concentrates - Vegetable oils (canola, soybean, olive) - Wine and spirits - Vinegar - Liquid sweeteners (corn syrup, honey, molasses) - Dairy products - Purified water - Food-grade glycerin - Flavor extracts
Common Non-Food-Grade Contents
Products that remove food-grade status permanently: - Industrial solvents - Petroleum products - Pesticides and herbicides - Paint and coatings - Industrial detergents - Antifreeze - Hydraulic fluids - Dyes and inks - Pharmaceutical chemicals
How to Verify Food-Grade Status
When purchasing a used IBC tote for food-related applications:
1. Ask for documentation. A reputable seller will provide information about prior contents. If they can't tell you what was in the tank, assume non-food-grade.
2. Check the label plate. Original product labels or residue on the cage label plate can indicate prior contents.
3. Look for UN markings. While all composite IBCs carry UN 31HA1 markings, food-grade containers may have additional stamps or markings from the reconditioner.
4. Smell test. Open the cap and check for chemical odors. Food-grade tanks should smell neutral or faintly of their prior food product.
5. Visual inspection. Heavy staining or discoloration often indicates non-food products, though some food products (like molasses) can also stain.
Our Approach
At St. Louis IBC Recycle, we maintain rigorous documentation on every tank in our inventory. Food-grade containers are tracked separately from industrial tanks throughout our facility. We never label a container as food-grade without verified documentation of its prior contents. When in doubt, we classify it as non-food-grade — the safety of end consumers is always our priority.
The Cost of Getting It Wrong
Using a non-food-grade container for food products can result in: - Chemical contamination of food products - FDA regulatory violations - Product recalls - Lawsuits and liability - Consumer health risks
The price difference between food-grade and non-food-grade IBC totes is minor compared to these potential consequences. Always err on the side of caution.