The resin was never the issue
Composite IBC bottles are blow-moulded from high-density polyethylene that meets FDA 21 CFR 177.1520 for food contact. That is true of the bottle that carried cane syrup and equally true of the bottle that carried a surfactant blend. Nobody makes a separate, inferior resin for industrial containers.
So when a supplier tells you a container "is food grade because it is FDA HDPE", they have told you nothing. Every one of them is. The question is what went into it afterwards, and what was done about it.
What actually separates the two
| Food-grade used tote | Industrial used tote | |
|---|---|---|
| Bottle resin | FDA-compliant HDPE | FDA-compliant HDPE — identical |
| Prior contents | Single food-contact product, named shipper | Named non-hazardous industrial product |
| Wash line | Dedicated bays, hoses, gaskets, staff rotation | Shared industrial bays |
| Final rinse | Potable water | Process water from the circuit |
| Gasket fitted | New food-contact EPDM | New EPDM |
| Storage | Covered, off ground, UV protected | Yard stock |
| Records issued | Prior-contents record + wash certificate | Prior-contents record |
| Typical price (275 gal) | $165 – $235 | $145 – $195 |
Why the dedicated line matters more than the wash
A hot caustic wash is very good at removing product. It is not good at removing the consequences of a hose that carried solvent residue an hour earlier. Cross-contamination in a reconditioning yard happens through shared equipment, not through insufficient scrubbing.
That is why our food line has its own bays, its own hoses, its own gasket stock, its own detergent circuit and its own staff rotation, and why an industrial container physically cannot enter it — different lane, different key. It costs us throughput during peak weeks and we have never once made an exception, because the moment you make one the whole claim is worthless.
Ask this specific question
Prior contents we accept, and the ones we do not
| Prior product | Accepted for food-grade resale? | Reasoning |
|---|---|---|
| Cane / corn syrup | Yes | Dissolves completely in hot water, no penetration |
| Fruit juice concentrate | Yes | Staining is cosmetic and does not affect safety |
| Olive & vegetable oil | Yes, after caustic | Saponifies fully at 160 °F with dwell |
| Food-grade glycerine | Yes | Water-miscible, no residue |
| Vinegar & brine | Yes | Check and replace gaskets, which do degrade |
| Liquid egg & dairy | Usually declined | Protein bake-on; we will not certify the result |
| Essential oils & flavourings | Declined | Aromatics penetrate HDPE and persist |
| Anything unidentified | Declined | No history, no grade — this is not negotiable |
When to skip the argument and buy rebottled
If your auditor, your customer or your own risk appetite is not satisfied by a prior-contents record, stop trying to find a better used container and buy a rebottled one. The bottle is new virgin HDPE that has never been filled, the cage and pallet are reused, and the whole prior-contents conversation disappears for about $50 more per unit.
We suggest this routinely and it is not a sales tactic — a rebottled unit is often less profitable for us than a food-grade reconditioned one. It is simply the right answer when documentation is the constraint rather than cleanliness.
Frequently asked
Is there a food-grade certificate for used IBC totes?
No, and this is worth being blunt about. There is no body that issues a transferable food-grade certification for a second-hand container. What a legitimate reconditioner provides is a prior-contents record and a wash certificate tied to a unit number. If a supplier offers you a "food grade certificate", ask who issued it and against what standard.
Can I wash an industrial tote into a food-grade one?
You can improve it substantially, but you cannot manufacture the history it does not have. If the prior product was non-hazardous and documented, a food-line wash gets you a clean container with a wash certificate — which is enough for many applications. What you will not get is a food-contact prior-contents record, because it does not exist.
Does staining mean a tote is not food-safe?
No. Fruit concentrate in particular leaves colour that no wash removes and that has no bearing on food safety. Odour is the meaningful signal, not colour — any container with detectable residual odour after washing is downgraded to industrial here regardless of what it held.
What about totes for kombucha or brewing?
Grade A food-safe is standard, and a great many Bay Area breweries and kombucha producers buy exactly that. Two practical notes: sanitise before first use regardless of grade, and keep the container out of light. Translucent HDPE plus daylight plus sugar is a very effective algae reactor.
Written by the yard team at IBC Totes San Francisco. Last reviewed February 2026. Spotted something wrong? Tell us — we would rather fix it than defend it.