Knowledge · Method
How to clean an IBC tote properly.
Or let us do it
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Eight steps
In order, and none of them optional.
- 01
Identify what was in it
Find the SDS before you touch anything. It determines the chemistry, the PPE, and whether this is a job you should be doing at all. If nobody can name the prior contents, stop — that container should not be cleaned on site.
- 02
Capture the heel
The few litres left in an 'empty' container are still the product, with the product's hazard classification. Drain into a labelled container for proper disposal. Never to a drain, never to the yard, never 'it's only a bit'.
- 03
Pre-rinse cold
A cold flush first shifts the bulk residue before you add heat or chemistry. Hot water on a protein or a sugar residue sets it; hot water on a resin can cure it.
- 04
Wash with the right chemistry
Caustic (2–5% sodium hydroxide, hot) for resins, dried polymers and heavy oils. Alkaline detergent at 60–70°C for food residues and light oils. Acidic cleaner for mineral scale and some fertiliser residues. Never mix.
- 05
Reach the top third
This is the step everyone gets wrong. A hose pushed through the 6-inch lid sends water straight to the bottom and never touches the upper walls. You need a rotating spray head on a lance — they hire for about $40 a day and they are the difference between clean and clean-looking.
- 06
Rinse until it runs clear, then rinse again
Three rinses minimum. On the last one, catch a sample in a clear glass and hold it to the light. If you can smell anything, it is not finished.
- 07
Dry it properly
Standing water in a warm sealed container grows biofilm faster than most of what you were storing. Drain fully, prop the lid, and give it air. Warm dry air if you have it.
- 08
Seal and label
Cap the outlet, fit the lid, and write on it what it last held and when it was cleaned. Future you will not remember and will not guess correctly.
Matching chemistry to residue
Guessing is how people ruin a bottle.
The wrong chemistry either fails to shift the residue or attacks the HDPE. Both are avoidable with thirty seconds of thought.
| Residue | Chemistry | Temperature | Notes |
|---|---|---|---|
| Food, syrup, edible oil | Alkaline detergent, 2–3% | 60–70°C | Cold pre-rinse first — heat sets sugars and proteins |
| Latex and water-based paint | Alkaline detergent + agitation | 40–50°C | Do not let it dry between steps or you are chiselling |
| Resins, adhesives, polymers | Caustic, 2–5% NaOH | 70–80°C | Full PPE. Long contact time beats high concentration |
| Mineral oil, lubricants | Alkaline degreaser | 60–70°C | Emulsify before rinsing or it just relocates |
| Acids | Neutralise, then water | Ambient | Neutralise in the container before draining, and monitor the exotherm |
| Caustics | Water, then mild acid rinse | Ambient | Confirm neutral pH on the final rinse |
| Liquid fertiliser | Water, then acidic cleaner for scale | Ambient–50°C | Phosphate scale needs acid, not detergent |
| Solvents | Do not clean on site | — | Vapour risk and disposal complexity. Send it to a permitted facility |
The heel is the whole legal problem
Everything difficult about cleaning a container is concentrated in the first few litres. An empty tote is not empty; it holds a residue that legally remains the product it held, with the same hazard classification and the same disposal obligations. Tipping it into a yard drain because it is “only a bit” is the single most common serious mistake made by people cleaning their own containers, and in New York it is an offence with teeth. Capture it, label it, characterise it, and route it to a permitted treatment facility.
Why the top third never gets clean
Water does not turn corners. A lance pushed through the 6-inch cap directs a jet downwards; it scours the base and the lower walls beautifully and leaves the upper walls and the underside of the roof largely untouched. Because the visible interior through the lid is the top third, the container then looks dirty even though most of it is spotless — or worse, it looks fine because the residue is pale.
A rotating spray head — a nozzle that spins on two axes as water passes through it — reaches the entire internal surface. They hire for around $40 a day and they are the entire difference between cleaning a container and rinsing it.
When not to do this yourself
- You cannot document what was in it.
- It held solvents, and you would be creating a vapour hazard in a confined space.
- The container needs to end up food-grade. That requires a dedicated line and verification, not a good scrub — see food-grade totes.
- You have more than about four containers, at which point our wash service is cheaper than your own time.
- You have nowhere legitimate to send the rinsate.
Verifying, without a lab
Catch the final rinse in a clear glass and look at it against a window. Smell it. Let it stand for ten minutes and look for a film on the surface or a sediment at the bottom. It is not a TOC test, but it catches almost everything a visual inspection through a lid will miss — and if any of those three checks fails, rinse again.
Can I clean an IBC tote with a pressure washer?
Partly. A standard lance through the lid cleans the bottom and the lower walls and leaves the top third essentially untouched, because water does not turn corners. Hire a rotating spray head — a spinning nozzle on a lance that reaches the full internal surface. It is the single biggest difference between a home clean and a professional one.
What can I use to clean a tote for drinking water?
Only start from a documented food-grade container. Then: detergent wash, thorough rinse, and a food-safe sanitiser at the manufacturer's dilution — a chlorine solution at 100–200 ppm is standard — followed by a final potable rinse. If the container ever held industrial chemistry, none of this helps. Permeation is in the wall, not on it.
Where do I dispose of the rinsate?
Not down a drain. Rinsate carries the hazard profile of whatever it rinsed, and in New York putting it into the sewer or a storm drain is an offence with real consequences. Collect it, characterise it, and send it to a permitted treatment facility — or send us the container and we will handle it.
How long does it take?
A careful job on one container is about 45 minutes plus drying, assuming you have a rotating head and hot water. Multiply by the number of totes and it becomes obvious fairly quickly why a wash service exists.
More than four totes to clean?
Send them to us. Correct chemistry, rotating heads, verified rinse, hot-air dried, sealed and certificated — about five working days.
