Food grade
totes.
Tell us the product and we will match the prior contents to it — a syrup tote and an oil tote wash differently and are priced differently.
Food grade means edible prior contents, a documented wash and a passed pressure test — all three, with paperwork. We sell 275 and 330 gallon units at $225–$340 and $265–$395 respectively, each with a prior-contents record, a CIP wash certificate showing time, temperature and caustic concentration, an air-hold test result and photographs of its own data plate.
Provenance is the product
Anyone can wash a tote. What costs money and takes discipline is knowing, for a specific serial number, that nothing but corn syrup has ever been inside it. That knowledge starts at the gate: before a trailer is unloaded, a grader photographs each data plate and logs the prior contents against the serial. Units arriving with missing, painted-over or illegible plates are permanently excluded from the food-grade path — no exceptions, no matter how clean the bottle looks.
It is a slightly brutal rule and it means we reject a meaningful share of otherwise saleable units into technical grade. We keep it because the alternative is a guess, and a guess in food packaging is not a business we want.
The wash cycle, specifically
Food-grade units go through a four-stage clean-in-place: an ambient pre-rinse to remove bulk residue, a hot caustic recirculation at 160–180 °F with 1.5–2.5% sodium hydroxide depending on residue class, a potable rinse to neutral pH, and a final sanitising rinse. Cycle time, peak temperature, concentration and final pH are logged per unit and printed on the certificate that ships with it.
Vegetable and olive oil residues get a longer caustic dwell and a surfactant assist; they are the hardest common residue to pull out of HDPE and we do not pretend otherwise. Syrup and juice come out in a single pass. Read the washing service page for the full matrix.
What food grade does not mean
- It is not an NSF listing. A reconditioned container cannot carry one, and anybody offering you one on a used tote is selling you a feeling.
- It is not a guarantee for your specific product. A tote that held vinegar is clean but may carry a faint acetic note that matters in a delicate juice and not at all in a brine.
- It is not sterile. If your process needs sterility, you sterilise on site; we supply a clean, documented vessel to start from.
Pairing prior contents to next use
We will match deliberately if you tell us the product. Syrup units for sugar solutions and sap. Brine units for pickling and salt. Oil units for oil. Juice concentrate units for juice. Cross-pairing works but occasionally carries a scent ghost, and it is cheaper to avoid than to argue about.
Ships with every unit
- Prior-contents record, by serial number
- CIP wash certificate: time, temp, % NaOH, final pH
- Air-hold pressure test result
- Data plate photographs, front and detail
- New gasket, new cap, inspected valve
Stock and pricing
| Format | Detail |
|---|---|
| 275 gal | $225 – $340 |
| 330 gal | $265 – $395 |
| Rebottled alternative | $340 – $430 |
| Typical lead time | 2 – 5 business days |
| Availability | Steady; allocate early for 12+ |
| UV sleeve | +$38 fitted |
| Matched valve fleet | +$6 per unit sorting |
Not sure which tier?
The grade decoder will not let you put a chemical-history bottle under a drinking water tap, which is exactly the mistake it exists to prevent.
Open the decoderFood grade questions
What makes a used tote 'food grade'?
Three things together, and all three are required. One: the bottle has only ever held edible product, proven from the data plate and the prior-contents record we transcribe at intake. Two: it has been through a documented hot caustic clean-in-place cycle with the time, temperature and concentration recorded. Three: it passed an air-hold pressure test afterwards. A tote with two of the three is a Grade A industrial tote.
What did these totes previously hold?
Overwhelmingly corn syrup, high-fructose syrup, fruit juice concentrate, vegetable and olive oil, vinegar, brine, molasses, liquid sugar, glycerin and food-grade flavourings. We tell you specifically, per unit, before you buy. Syrup units are the cleanest-washing and the most abundant; oil units need a longer cycle and we charge accordingly.
Can I use a food grade tote for drinking water?
Generally yes, and it is the most common request we get. The caveat is that your own authority — a state health department, a certifying body, an insurer — may want a container that has only ever held water. If you are in that position, buy rebottled: a new virgin bladder in a reclaimed cage, and no provenance argument to have.
Is NSF or FDA certification included?
The bottle resin is an FDA-compliant HDPE, which is a property of the material, not of the used container. We do not and cannot issue an NSF listing on a reconditioned unit. What we issue is the prior-contents record, the wash certificate with cycle data, the pressure test result and photographs of the data plate — the documentation a food safety auditor actually asks to see.
How should I store a food grade tote before use?
Indoors or under cover, out of direct sun, cap closed and valve capped. UV is what destroys HDPE; a tote left in a yard for two summers will chalk and embrittle at the shoulders. If it has to live outside, buy a fitted UV sleeve — we stock them.
What ships with every food-grade unit, field by field
This is the document set a BRCGS or SQF auditor asks for. A supplier letter saying 'food grade' is not one.
| Document | Fields it carries | Why an auditor wants it |
|---|---|---|
| Prior-contents record | Serial number, prior content, intake date, grader | It is the only control on residue absorbed into the polymer wall. Cannot be produced retrospectively. |
| CIP wash certificate | Cycle ID, date, operator, peak temperature °F, % NaOH, caustic dwell minutes, final rinse discharge pH | Parameters are falsifiable against our logs; an assertion is not. |
| Air-hold pressure test result | Pressure, hold duration, pass, date — performed after wash and after gasket fitting | Order matters: a test before the gasket change proves nothing about the unit you receive. |
| Data plate photographs | Wide and detail, showing the serial the record is tied to | Closes the chain between the physical object and the paperwork. |
| Hardware statement | New gasket, new cap, valve inspected or replaced | The parts that contact product and are cheapest to get wrong. |
Questions auditors actually ask
- "Show me the intake record for this serial number."
- "How do you know this held corn syrup and not something else?"
- "What happens to a unit whose data plate is illegible?"
- "Who records the prior contents, and do they have a commercial incentive?"
- "Is the pH meter calibrated, and how often?"
- "Can I see a unit that was rejected from food grade, and the reason?"
- "Does the person assigning the grade report to sales?"
The last two separate a real audit from a paperwork exercise, and both are about incentives rather than process. Our graders report to operations, carry no sales target, and the commercial side can ask what is available but cannot ask for a grade to be reconsidered. We can also walk an auditor to a spotless, clear-bottled unit sitting in the cheapest tier because somebody painted over its plate four years ago — that demonstration does more than any certificate.
Eligible prior contents, and how we match them to your product
Matching deliberately costs us nothing and avoids an argument about a scent ghost later. Ask for it.
| Prior content | Wash cycle | Best next use | Avoid for |
|---|---|---|---|
| Corn syrup / HFCS | Single hot-water pass | Sugar solutions, maple sap, syrups, brewing adjunct | Nothing in particular — the most versatile history available |
| Fruit juice concentrate | Hot caustic; staining permanent | Juice, cider, beverage base | Pale or delicate products, where colour matters visually |
| Liquid sugar | Single pass | Confectionery, brewing, fermentation | — |
| Brine / salt solution | Cold rinse largely sufficient | Pickling, curing, cheese brine, olives | Low-salt delicate products |
| Vinegar | Single pass | Pickling, sauces, dressing base | Delicate juice — faint acetic note possible |
| Vegetable / olive oil | Long caustic plus surfactant | Oil, fat, oleoresin | Aqueous products — hardest residue to fully clear |
| Molasses | Hot caustic | Feed, baking, distilling | Pale products |
| Glycerin | Single pass | Food and cosmetic glycerin | — |
| Potable water | Single pass | Anything — the cleanest history available | — |
Permanent exclusions, applied without exception
- Missing, illegible or painted-over data plate. The single largest reason units land in technical grade.
- Any non-edible prior content, however thoroughly washed.
- Any unlabelled unit, however clean the bottle looks.
- Any unit whose plate indicates a UN hazard class.
- Any unit with an unexplained interior odour at intake.
Four stages, with the numbers
Cycle time, peak temperature, caustic concentration and final pH are logged per unit and printed on the certificate.
- Ambient pre-rinse. Bulk residue displaced and captured before any heat is applied. Heating a tote full of syrup residue bakes it on, so this stage is not optional even though it looks like one.
- Hot caustic recirculation. 160 – 180 °F, 1.5 – 2.5% sodium hydroxide, rotating spray head through the 6-inch opening, 12 to 40 minutes by residue class. This is the stage that does the work. Saponification rate is far more sensitive to temperature than to concentration — the same caustic at 70 °F is roughly a tenth as effective on an oil residue.
- Potable rinse to neutral. Fresh water until discharge pH reads neutral on a calibrated meter. Measured, not assumed, and the figure goes on the certificate.
- Sanitising rinse and drain-dry. Final rinse, inverted drain, warm-air dwell. Then the air-hold pressure test and certificate print.
| Residue | Caustic | Temperature | Dwell | Price |
|---|---|---|---|---|
| Syrup, juice, liquid sugar | 1.5% | 160 °F | 12 – 15 min | $28 |
| Brine, vinegar, salt solution | 1.5% | 160 °F | 12 min | $28 |
| Glycol, antifreeze | 1.8% | 165 °F | 15 min | $32 |
| Detergent, surfactant | 2.0% | 170 °F | 25 min | $38 |
| Vegetable / olive oil | 2.0 – 2.5% | 165 – 180 °F | 30 – 40 min + surfactant | $58 |
| Latex paint, adhesive | 2.5% | 180 °F | Mechanical first, then 40 min | $65 |
| Cured resin, polyurethane | — | — | Not washable | Rebottle or regrind |
The caustic charge recirculates through a three-stage separator — solids, oil coalescing, carbon polish — so a single charge washes dozens of units. Make-up water is under 9 gallons per tote against an industry single-pass typical of 40 or more. Spent charge is neutralised and discharged under permit; the separated oil fraction goes to a used-oil reclaimer.
Keeping a food-grade unit food-grade on your site
A documented unit stops being useful the moment its documentation stops matching the object. Four rules.
- Dedicate and label. A $280 container does not justify an unvalidated product changeover. Run one product in it. If you must change, send it back for a documented wash with a fresh certificate rather than cleaning it in-house without data.
- Keep the paperwork with the unit. Not in a folder in the office. Write the serial on the cage in paint pen and file the certificate against it, because in an audit you will be asked to connect the object in front of you to the record.
- Store indoors or under cover. UV embrittles HDPE at the shoulders within two Midwest summers. A fitted sleeve is $38 if outdoor storage is unavoidable.
- Cap the valve and close the fill cap. Obvious, routinely not done, and the most common way a clean vessel becomes a questionable one.
When poly is not enough
140 °F is the line. Above it, HDPE softens and creeps, and a filled bottle under its own hydrostatic load permanently deforms against the cage. Hot fills, steam-in-place cleaning and anything held above 60 °C belong in 304 or 316L stainless. For chloride-bearing product — brine, cheese brine, pickling liquor — 316L specifically, because 304 will pit at the welds within a season.
HDPE is also slightly oxygen-permeable. Over a week that is irrelevant; over three months it is the difference between a clean beer and a cardboard one. For holding rather than moving, go stainless.
Detailed questions
Is food grade the same as FDA approved?
No, and the distinction matters. The bottle resin is an FDA-compliant HDPE, which is a property of the material and true of every poly IBC we sell including the cheapest technical-grade unit. Food grade is our provenance-and-process standard on top of that: documented edible prior contents, a logged caustic cycle, and a passed pressure test.
Can you supply a certificate of analysis?
Not in the sense a chemical supplier means it — we do not assay the vessel. What we supply is a process and provenance record: what it held, exactly how it was washed with the measured parameters, and that it passed a pressure test afterwards. If your process requires analytical verification of the vessel, that is a swab test you run on receipt and we are happy to be swabbed.
How long does a food-grade unit stay certified?
The documentation describes a point in time — what the unit held and how it was washed on a given date. It does not expire, but it stops describing the object the moment you fill it with something. One fill of your product and the relevant provenance is now yours to document, not ours.
Do you have units that held only one specific product?
Yes, and asking is worthwhile. We can usually supply a matched lot that all held the same thing — all corn syrup, all brine, all juice concentrate — from a single incoming load. It costs nothing extra on reasonable quantities and removes any question of cross-flavour between units in your own fleet.
What is the realistic availability on twelve matched food-grade 330 gallon units?
Three to five weeks, honestly. That request sits at the intersection of a scarce format — 330s are about one in six of our intake — and a scarce provenance, which is a small number multiplied by a small number. Tell us the date and we flag them at the grading pad; ask on the day and we cannot conjure them.
Can I buy food grade and use it for something industrial?
You can, and you are wasting money. The food-grade premium is documentation, and documentation has no value in a glycol loop or a dust-suppression tank. Grade A at $155–$225 is the correct tier and we will say so even though the food-grade sale is better for us.
What if I need the wash certificate reissued later?
Email us the serial number. We keep cycle logs and intake records indefinitely — seventeen years of them — and reissuing a certificate is a same-day job. This is one of the quieter benefits of quoting and recording everything in writing.
Are food-grade units ever cheaper than Grade A?
Occasionally, when a food-history unit has heavy cosmetic staining and sits at the bottom of its band while Grade A stock is tight. It is worth asking about if you are flexible on appearance — you would be buying a documented unit for undocumented money.
Name the product, get the right prior contents
Syrup, oil, brine, juice — we hold all four and match them on purpose rather than by accident.