The 14-point buying checklist
This is the sequence our inbound inspector works through on every container that crosses the bench — about thirty thousand a year. It takes four minutes per unit and it is the difference between buying an asset and buying somebody else's problem.
Send us photos and we will grade it for you
Wide shot, close-up of a typical unit, and one of the UN plate. We will tell you what the lot actually is, free.
Tell us what you have.
We will tell you what it is worth.
Buying, selling, washing, hauling or recycling — one form covers all of it. Replies come from a specialist in York, PA, by email, inside one business day.
Prefer plain email? Write to info@ibctotesreco.com — include your ZIP, quantity and what the totes last held.
Check provenance first — it is the only unrepairable, undiscountable factor and it decides half the value. Then the UN plate, the bottle (clarity, stiffness, stress whitening, especially the valve boss), the cage (diagonals, weld nodes, feet) and the pallet. Four minutes a unit. Everything except prior contents is either repairable or a price negotiation.
Provenance — what did it hold, and who says so?
A named product, from the site that generated the container, ideally with a safety data sheet. Not 'industrial chemicals'. Not a broker's assurance. This single answer determines whether the container can ever be food-grade, whether it can be washed at all, and roughly half its value.
UN plate — present, legible, and what does it say?
Find it on the cage or bottle shoulder. Check the category digit (31 for liquids), the packing group letter (Y covers PG II and III), the date, and whether a reconditioner mark is present. Illegible means non-UN, which is fine for non-regulated service at the right price.
Periodic test status, if it will carry regulated material
Under 49 CFR 180.352 an IBC in hazmat service needs an external visual inspection at least every 2.5 years and a leakproofness test plus full inspection at least every 5 years, with records. Ask for them. A lapsed test means the container is not authorised until re-tested.
Bottle clarity — backlight it, do not just look in
A bright light against one wall, viewed through from the other. Haze, film and ghosting show up instantly this way and are nearly invisible from the lid opening. Ghosting from pigment or resin is permanent and defines the Grade B / Grade C boundary.
Bottle stiffness and colour — the UV test
Press the wall with a thumb. A sound bottle flexes and returns. A UV-degraded bottle feels stiff, boardy and sounds different when tapped; the natural HDPE will have gone chalky or yellow-white. That container has years rather than decades left, whatever else is right about it.
Stress whitening at the lower radius
Look at the bottom corner curves where the bottle meets the pallet. White, crazed or crackled areas are stress whitening from over-filling, freezing or impact. This is where bottles fail, and it fails suddenly rather than gradually.
Valve boss — the unrepairable part
Inspect around the moulded outlet boss for cracks, star crazing and distortion. The usual cause is somebody hanging a pump or a rigid pipe run off the valve. A cracked boss cannot be repaired; the container is a rebottle or a recycle.
Valve condition and function
Open and close it. Does it turn smoothly, seat positively, and hold? Is the handle present and not bent? Is the seat elastomer hard, shiny, swollen or flattened? A seized or missing valve is parts and labour before the container can even be tested.
Lid and lid seat
Is the lid present, the correct 6-inch pattern, and is the seal intact? Check the seat on the bottle for cracks radiating from the thread. A damaged lid seat lets water in, which is how you end up with freeze damage and standing water inside.
Cage squareness — measure the diagonals
Across the top frame, both ways. More than roughly half an inch of difference means out of square. An out-of-square cage will not stack safely and cannot be reliably jigged back without overstressing the weld nodes.
Weld nodes and previous field repairs
Every node, visually. Rust blooming through the galvanising precedes cracking and is the early warning. Any previously field-welded node is a reject: the weld destroyed the zinc locally and corrosion is already running underneath.
Feet and forklift damage
The corners and feet take the impacts. Bent feet are how a cage goes out of square in the first place, so damage here predicts the problem in point 10 even when the diagonals still measure acceptably.
Pallet type and condition
Steel, composite or timber; four-way entry or two-way. Probe timber bearers for rot and decks for delamination — timber in outdoor storage is the most common reason a whole lot drops a grade. Check steel pallets for cracked welds and red rust at structural members.
Interior standing water and smell
Tip it slightly and listen. Water inside means the lid or lid seat has been failing for a while and the container has probably been through a freeze. Then smell the headspace: your nose detects residues at levels no practical field test will, and a strong smell after washing means the bottle has absorbed the product.
Turning fourteen observations into a grade
This is roughly how our bench converts the checklist into the grade printed on the invoice.
| Finding | Grade A | Grade B | Grade C | Cage only / scrap |
|---|---|---|---|---|
| Prior service | Documented edible | Declared industrial | Declared industrial | Any declared |
| Bottle clarity | Clear / near-clear | Haze & staining OK | Ghosting permitted | Any |
| UV condition | Sound, flexible | Sound, flexible | Slight stiffening OK | Chalky / boardy |
| Stress whitening | None | None at the radius | Minor, stable | Crazed or cracked |
| Valve boss | Perfect | Perfect | Perfect | Cracked → rebottle |
| Cage squareness | Square | Square | Minor bow | Out of square |
| Weld nodes | All sound | All sound | All sound | Cracked or field-welded |
| Pallet | Steel / composite, sound | Any, sound | Any, serviceable | Rotted / cracked |
| Lid seat | Perfect | Sound | Sound | Cracked |
| Standing water history | None | None | Acceptable | Freeze damage |
| Smell after wash | None | Faint acceptable | Noticeable OK | Strong → rebottle |
Note the two rows that jump straight to the right-hand column regardless of everything else: a cracked valve boss and a failed weld node. Those are the two findings that make an otherwise excellent container a rebottle or a recycle — which is exactly what rebottling exists for.
Buying remotely, from photographs
Most used-tote transactions happen without the buyer seeing the containers. That is fine if you ask for the right photographs, and it is a disaster if you accept a stock image. Ask for, in this order:
- A wide shot of the lot as it stands, so you can see storage conditions.
- One typical unit, full height, from the valve side.
- The UN plate, close enough to read every character.
- The bottle backlit, if they can manage it — most cannot, and the ones who can are the ones to buy from.
- The lower radius corners.
- The pallet from underneath or at an angle showing the bearers.
- The valve, open.
A seller who sends all seven without complaint is a seller who knows what they have. A seller who sends one glamour shot of a clean row is selling you the best unit in the lot. We photograph every graded unit on the rack and attach the set for your specific serials to the quote — not because it is generous, but because it removes an entire category of argument.
Red flags in the conversation, not the container
- “They had soap in them” with no product name.
- A declaration from a broker rather than the generating site.
- “Food grade” offered without any prior-contents record.
- No wash record, or a wash described only as “cleaned”.
- Reluctance to photograph the UN plate.
- A price that is well below the market for the grade claimed.
That last one is worth dwelling on. In this trade a bargain is almost always a grade problem, a provenance problem or a freight surprise. The 2015 entry in our history is what one of those cost us.
| Tool | For |
|---|---|
| Bright torch / inspection lamp | Backlighting the bottle |
| Tape measure | Cage diagonals |
| Phone camera | UN plate and findings |
| Screwdriver or probe | Timber bearer rot |
| Gloves | Everything |
| Notebook | Serials and findings per unit |
| Printed grade definitions | Agreeing language up front |
Buying FAQ
What is the single most important thing to check on a used IBC tote?
What it previously held, from a source you can trust. Everything else — clarity, cage, valve, pallet — is repairable or discountable. Prior contents are permanent. A container that held crop protection or solvent will never be food-grade or potable eligible regardless of condition or washing, and a container whose history is genuinely unknown should be priced as scrap.
How can I tell if a used tote has been properly washed?
Backlight it: a bright light held against one wall, viewed through from the other side, shows haze, film and ghosting that are invisible from the lid. Then smell the headspace. Then ask for the wash record — temperature, chemistry, cycle time, final-rinse pH. A seller who cannot produce that record washed it, at best, with a hose.
Is a stained IBC tote a problem?
Usually not, functionally. Staining and haze are cosmetic and define the boundary between Grade A and Grade B, which is a price difference rather than a performance one. For industrial chemistry a stained bottle performs identically. Where staining matters is where clarity matters: light-coloured products, visual level checks, and audit-exposed food work.
How do I know if the cage is sound?
Measure the diagonals across the top frame both ways — more than about half an inch of difference means it is out of square, which affects stacking safety and is not reliably repairable. Then look at every weld node for rust blooming, which precedes cracking, and check the feet for forklift impact. A previously field-welded node is a reject.
Should I buy a tote without a UN plate?
Only for non-regulated service, and only at a discount. A missing or illegible marking means the container is not an authorised packaging for hazardous materials no matter how good it looks. For water, site storage, upcycling and most non-regulated industrial liquids it is perfectly serviceable — just be clear you are buying a vessel, not a packaging.
Related pages
What each finding does to the grade
Thirteen graded attributes, ten failure modes and one hundred prior products — the three datasets the checklist feeds into.
| Grade A | Grade B | Grade C | Cage / pallet only | |
|---|---|---|---|---|
| Bottle clarity | Clear / near-clear | Haze & staining permitted | Ghosting permitted | n/a |
| Prior service | Documented edible, signed at source | Industrial, declared | Industrial, declared | Any declared |
| Wash programme | Food line, recorded | Programme to residue, recorded | Ambient rinse | Cage rinse only |
| Hydrostatic test | 100% of units | Sampled | Sampled | n/a |
| New valve & gaskets | Yes, FDA-compliant | Yes | Sound or new | n/a |
| New lid | Yes | Yes | Sound or new | n/a |
| Re-marked | Yes | Yes | Where the plate survives | No |
| Stackable when filled | 2 high | 2 high | No | n/a |
| 30-day leak warranty | Yes | Yes | No — watertight at loading | No warranty |
| Food / potable | Yes, with records | No | No | n/a |
| Cost vs new | ≈ 35–45% | ≈ 25–32% | ≈ 18–24% | ≈ 5–10% |
| Lead time | Ex-stock to 5 days | Ex-stock | Ex-stock | Ex-stock |
| Loop score (lives left) | 5–6 | 4–5 | 2–3 | 3–4 bottles |
| Mode | Cause | What it looks like | Recoverable? | Prevention | Frequency |
|---|---|---|---|---|---|
| UV embrittlement | Unshaded outdoor storage | Chalky, boardy, higher-pitched tap | No | Cover or shade it | Most common |
| Stress whitening at the radius | Over-fill, freeze, uneven ground | White crackled lower corners | No | Level pad, respect max gross mass | Common |
| Plasticisation & ghosting | Pigment, resin, solvent absorption | Permanent shadow when backlit | Rebottle | Match chemistry to material | Common |
| Freeze damage | Left full and sealed | Bulged panel, split seam, blown boss | Sometimes fittings only | Drain or 2/3 fill, vented lid | Seasonal spike |
| Valve boss cracking | Unsupported pump or rigid pipe | Star crazing at the boss root | No — rebottle | Support the pump separately | Avoidable |
| Impact puncture | Forklift tine, drop, collision | Hole or deep gouge | No | Handling discipline | Rare |
| Cage racking | Soft ground, foot impact, over-fill | Diagonals differ by > 1/2" | Jig if under 1/2" | Level load-bearing pad | Common |
| Weld node cracking | Fatigue, previous field weld | Rust bloom then crack | No | Never field-weld a cage | Occasional |
| Pallet rot / delamination | Timber base outdoors | Soft bearers, split deck | Replace base | Specify steel or composite | Very common |
| Seal failure | Compression set, wrong elastomer, reuse | Weeping at the boss or lid | Yes — new seal | Replace at every product change | 71% of reports |
The seven photographs, in order
A seller who sends all seven without complaint is a seller who knows what they have. That signal is worth more than the photographs.
- The lot as it stands, wide, from a distance. Storage conditions predict condition better than any close-up.
- A typical unit, full height, from the valve side. Ask for a typical one in those words.
- The UN plate, close enough to read every character.
- A backlit bottle wall — lamp against one side, photographed from the other. Most sellers cannot manage this; the ones who can are the ones to buy from.
- The lower corner radius, where bottles fail.
- The pallet, from underneath or at an angle showing the bearers.
- The valve, open, confirming it is present, turns and has a handle.
Prior products — look the declaration up yourself
| Prior product | Family | SG | Programme | Best grade | Food? | Seal | What to watch |
|---|---|---|---|---|---|---|---|
| Apple juice concentrate (70 Bx) | Food & beverage | 1.35 | PF | A | Yes | FDA EPDM | Best inbound stock we see; sugars rinse clean |
| Orange juice concentrate | Food & beverage | 1.33 | PF | A | Yes | FDA Viton | Citrus oil fraction can scent the bottle |
| Grape juice concentrate | Food & beverage | 1.34 | PF | A | Yes | FDA EPDM | Watch for tartrate scale at the outlet |
| Liquid sugar / sucrose syrup | Food & beverage | 1.33 | PF | A | Yes | FDA EPDM | Hot rinse only, no caustic needed |
| High-fructose corn syrup | Food & beverage | 1.38 | PF | A | Yes | FDA EPDM | Viscous; 3" outlet helps decanting |
| Molasses | Food & beverage | 1.42 | PF | A | Yes | FDA EPDM | Heated rinse; heavy heel |
| Honey | Food & beverage | 1.42 | PF | A | Yes | FDA EPDM | Crystallises; heater jacket recommended |
| Maple sap | Food & beverage | 1.02 | PF | A | Yes | FDA EPDM | Benign but sugars feed biofilm fast |
| Maple syrup | Food & beverage | 1.33 | PF | A | Yes | FDA EPDM | Hot rinse; inspect lid seat |
| Apple cider | Food & beverage | 1.05 | PF | A | Yes | FDA EPDM | Vented lid essential — ferments |
| Wine / must | Food & beverage | 1.08 | PF | A | Yes | FDA EPDM | Tartrate scale; usually leased |
| Beer / wort | Food & beverage | 1.05 | PF | A | Yes | FDA EPDM | Stainless preferred for repeat service |
| Brine (pickling liquor) | Food & beverage | 1.20 | PF | A | Yes | FDA Viton | Check cage for chloride attack |
| Vinegar, 10% | Food & beverage | 1.01 | PF | A | Yes | FDA EPDM | Easy; acid-resistant seal needed |
| Soy sauce | Food & beverage | 1.20 | PF | A | Yes | FDA Viton | Salt plus colour; monitor ghosting |
| Edible soybean oil | Food & beverage | 0.92 | P2 | A | Yes | FDA Viton | 140°F minimum or fat re-deposits |
| Edible canola oil | Food & beverage | 0.91 | P2 | A | Yes | FDA Viton | As above |
| Olive oil | Food & beverage | 0.92 | P2 | A | Yes | FDA Viton | Polyphenols can tint the wall |
| Glycerine, USP | Food & beverage | 1.26 | PF | A | Yes | FDA EPDM | Often effectively first-use stock |
| Propylene glycol, food grade | Food & beverage | 1.04 | PF | A | Yes | FDA EPDM | Frequently single-product filler stock |
| Liquid egg | Food & beverage | 1.04 | PF | A | Case by case | FDA EPDM | Protein film needs verification |
| Milk / dairy intermediate | Food & beverage | 1.03 | PF | A | Case by case | FDA EPDM | Allergen changeover record required |
| Whey concentrate | Food & beverage | 1.06 | PF | A | Case by case | FDA EPDM | Protein scale; hot detergent |
| Tomato paste | Food & beverage | 1.10 | PF | A | Yes | FDA Viton | Acidic; stains but rinses |
| Fruit purée | Food & beverage | 1.12 | PF | A | Yes | FDA EPDM | Pulp load; coarse settling matters |
| Flavour concentrate / essence | Food & beverage | 0.95 | Refused | Rebottle | No | PTFE | Permeates HDPE permanently — use stainless |
| Citrus terpene oil | Food & beverage | 0.84 | Refused | Recycle | Never | PTFE | One batch ends a poly bottle's usefulness |
| Spent grain slurry | Food & beverage | 1.05 | P2 | B | No | EPDM | By-product duty; 3" outlet strongly advised |
| Yeast slurry | Food & beverage | 1.08 | P2 | B | Case by case | EPDM | Vent — active fermentation |
| UAN 32 liquid nitrogen | Agricultural | 1.32 | P1 | B | Never | EPDM | Rinses readily; dense — check ratings |
| UAN 28 | Agricultural | 1.28 | P1 | B | Never | EPDM | As above |
| Liquid starter 10-34-0 | Agricultural | 1.38 | P1 | B | Never | EPDM | Polyphosphate scale at the outlet |
| Ammonium thiosulphate | Agricultural | 1.33 | P1 | B | Never | EPDM | Sulphur odour persists faintly |
| Potassium thiosulphate | Agricultural | 1.47 | P1 | B | Never | EPDM | Very dense; 275 format only |
| Calcium nitrate solution | Agricultural | 1.43 | P1 | B | Never | EPDM | Crystallises when cold |
| Humic / fulvic acid | Agricultural | 1.10 | P2 | B | Never | EPDM | Dark staining, usually washes out |
| Fish hydrolysate fertiliser | Agricultural | 1.12 | P3 | C | Never | Viton | Odour frequently permanent |
| Foliar micronutrient blend | Agricultural | 1.25 | P1 | B | Never | EPDM | Metal salts can tint the wall |
| Glyphosate concentrate | Agricultural | 1.17 | P3 | C | Never | Viton | Labelled rinse programme governs |
| 2,4-D amine concentrate | Agricultural | 1.19 | Refused | Per label | Never | Viton | Label prescribes rinse-and-destroy |
| Crop oil adjuvant | Agricultural | 0.88 | P3 | C | Never | Viton | Attacks EPDM; permeates slowly |
| Surfactant adjuvant (NIS) | Agricultural | 1.03 | P1 | B | Never | EPDM | Foams heavily on transfer |
| Molluscicide suspension | Agricultural | 1.22 | Refused | Per label | Never | Viton | Refused — labelled destruction |
| Livestock drinking water | Water & inert | 1.00 | P1 | A | Yes | EPDM | Effectively first-use |
| Irrigation water | Water & inert | 1.00 | P1 | A | Yes | EPDM | May carry silt; coarse settling |
| Sodium hydroxide 50% | Industrial chemistry | 1.52 | P1 | B | Never | EPDM | 3,497 lb filled — check every rating |
| Sodium hydroxide 25% | Industrial chemistry | 1.27 | P1 | B | Never | EPDM | Easy wash; dilute and drain |
| Potassium hydroxide 45% | Industrial chemistry | 1.46 | P1 | B | Never | EPDM | As NaOH; dense |
| Sulphuric acid 93% | Industrial chemistry | 1.83 | Refused | Dedicated | Never | PTFE | 4,182 lb filled; dedicated service only |
| Sulphuric acid 35% | Industrial chemistry | 1.26 | P1 | C | Never | PTFE | Fume attack on cage galvanising |
| Hydrochloric acid 31% | Industrial chemistry | 1.16 | P1 | C | Never | PTFE | Cage usually the limiting factor |
| Phosphoric acid 75% | Industrial chemistry | 1.58 | P1 | B | Never | PTFE | Dense; viscous at low temperature |
| Nitric acid 42% | Industrial chemistry | 1.26 | Refused | Dedicated | Never | PTFE | Oxidiser — embrittles HDPE |
| Hydrogen peroxide 35% | Industrial chemistry | 1.13 | P1 | B | Case by case | PTFE | Vent; absolutely no contaminants |
| Sodium hypochlorite 12% | Industrial chemistry | 1.21 | P1 | B | Never | EPDM | Degasses; vent and shield from UV |
| Ferric chloride 40% | Industrial chemistry | 1.42 | P2 | C | Never | Viton | Heavy orange staining is permanent |
| Aluminium sulphate | Industrial chemistry | 1.33 | P1 | B | Never | EPDM | Scale at the outlet boss |
| Polyaluminium chloride | Industrial chemistry | 1.35 | P1 | B | Never | EPDM | Gels if allowed to dry out |
| Propylene glycol coolant | Industrial chemistry | 1.04 | P1 | B | Never | EPDM | Ideal duty; nothing to watch |
| Ethylene glycol | Industrial chemistry | 1.11 | P1 | B | Never | EPDM | Toxic — never re-grade for potable |
| Calcium chloride brine 32% | Industrial chemistry | 1.38 | P1 | B | Never | Viton | Chloride attack on lower cage |
| Magnesium chloride de-icer | Industrial chemistry | 1.32 | P1 | B | Never | Viton | As above; rinse frames each spring |
| Potassium acetate de-icer | Industrial chemistry | 1.28 | P1 | B | Never | EPDM | Benign; airport runway chemistry |
| Urea solution (DEF) | Industrial chemistry | 1.09 | P1 | B | Never | EPDM | Purity-critical next fill; usually dedicated |
| Nickel plating solution | Industrial chemistry | 1.25 | Refused | Recycle | Never | Viton | Metal-bearing; never re-used |
| Chromic acid solution | Refused | 1.30 | Refused | Refused | Never | PTFE | Not accepted at the gate |
| Cyanide plating bath | Refused | 1.15 | Refused | Refused | Never | PTFE | Acutely hazardous — licensed facility only |
| Phosphate conversion coating | Industrial chemistry | 1.22 | P2 | C | Never | Viton | Scale and staining |
| Amine corrosion inhibitor | Industrial chemistry | 0.98 | P2 | B | Never | Viton | Fish-like odour can persist |
| Sodium silicate | Industrial chemistry | 1.39 | P3 | C | Never | EPDM | Sets hard if dried; wash promptly |
| Polymer flocculant emulsion | Industrial chemistry | 1.02 | P3 | C | Never | EPDM | Extremely slippery; gels with water |
| Sodium bisulphite | Industrial chemistry | 1.33 | P1 | B | Never | EPDM | Sulphur odour; vent |
| Antifoam silicone emulsion | Industrial chemistry | 1.00 | P3 | C | Never | Viton | Film is very hard to remove |
| Latex paint, white | Coatings & inks | 1.30 | P3 | C | Never | EPDM | Heavy ghosting; often rebottle |
| Latex paint, tinted | Coatings & inks | 1.32 | P3 | C | Never | EPDM | Pigment ghosting permanent |
| Water-based pigment dispersion | Coatings & inks | 1.25 | P3 | C | Never | EPDM | Strong colour transfer into the wall |
| Flexographic ink | Coatings & inks | 1.08 | P3 | Rebottle | Never | Viton | Resin binder plasticises the surface |
| UV-curable coating | Coatings & inks | 1.10 | Refused | Recycle | Never | PTFE | Cures in the bottle; not washable |
| Acrylic adhesive emulsion | Coatings & inks | 1.08 | P3 | Rebottle | Never | EPDM | Caustic at 180°F, often still ghosts |
| PVA wood adhesive | Coatings & inks | 1.09 | P3 | C | Never | EPDM | Wash before it skins over |
| Polyurethane resin, 2-part | Coatings & inks | 1.12 | Refused | Recycle | Never | PTFE | Cross-linked; nothing shifts it |
| Asphalt emulsion | Coatings & inks | 1.01 | P3 | C | Never | Viton | Hot caustic plus long dwell |
| Concrete release agent | Coatings & inks | 0.89 | P2 | C | Never | Viton | Oily film; 140°F detergent |
| Mineral oil, hydraulic | Oils & fuels | 0.88 | P3 | B | Never | Viton | Permeation; faint odour often remains |
| Cutting fluid, soluble | Oils & fuels | 0.92 | P3 | B | Never | Viton | Bacterial odour is the real problem |
| Gear oil | Oils & fuels | 0.90 | P3 | C | Never | Viton | Heavy film; two cycles common |
| Used motor oil | Refused | 0.89 | Refused | Recycle | Never | Viton | Waste stream — not accepted for reuse |
| Diesel fuel | Oils & fuels | 0.85 | Refused | Recycle | Never | Viton | Permanent odour; bottle compromised |
| Kerosene | Oils & fuels | 0.81 | Refused | Recycle | Never | Viton | As diesel |
| Biodiesel B100 | Oils & fuels | 0.88 | P3 | C | Never | Viton | Solvency attacks some HDPE grades |
| Vegetable-based lubricant | Oils & fuels | 0.92 | P2 | B | Never | Viton | Oxidises to a varnish if left |
| Anionic surfactant concentrate | Cleaning & sanitation | 1.05 | P1 | B | Never | EPDM | It is soap — rinses, but foams |
| Non-ionic surfactant | Cleaning & sanitation | 1.03 | P1 | B | Never | EPDM | Easy wash |
| Alkaline degreaser | Cleaning & sanitation | 1.10 | P1 | B | Never | EPDM | Compatible with our own loop |
| Acid descaler | Cleaning & sanitation | 1.14 | P1 | B | Never | PTFE | Segregate heel from caustic tanks |
| Quaternary ammonium sanitiser | Cleaning & sanitation | 1.01 | P1 | B | Case by case | EPDM | Residual actives need verification |
| Peracetic acid sanitiser | Cleaning & sanitation | 1.12 | P1 | B | Case by case | PTFE | Oxidiser; vent and shield |
| Hand sanitiser (ethanol 70%) | Cleaning & sanitation | 0.87 | P1 | B | Case by case | Viton | Alcohol flashes off; little residue |
| Laundry detergent, liquid | Cleaning & sanitation | 1.06 | P1 | B | Never | EPDM | Optical brighteners can tint |
| Car wash soap concentrate | Cleaning & sanitation | 1.04 | P1 | B | Never | EPDM | Very common inbound stock |
| Floor finish / wax emulsion | Cleaning & sanitation | 1.02 | P3 | C | Never | EPDM | Films hard; wash before it dries |
| Potable water | Water & inert | 1.00 | P1 | A | Yes | FDA EPDM | Frequently first-use stock |
| Deionised water | Water & inert | 1.00 | P1 | A | Yes | FDA EPDM | Best-value first-use source |
| Distilled water | Water & inert | 1.00 | P1 | A | Yes | FDA EPDM | As above |
| Glycerine, technical | Water & inert | 1.26 | P1 | B | No | EPDM | Technical grade is not food grade |
| Saline solution, industrial | Water & inert | 1.07 | P1 | B | Never | Viton | Chloride; inspect cage |
| Unknown or mixed residue | Refused | — | Refused | Refused | Never | — | Safety assessment, not a grading question |
| RCRA P-listed residue | Refused | — | Refused | Refused | Never | — | Licensed treatment facility only |
| Radiological material | Refused | — | Refused | Refused | Never | — | No testing, no discussion |
| Pesticide, labelled destruction | Refused | — | Refused | Refused | Never | — | Service life ended by regulation |
Service life by exposure — what storage conditions mean
| Exposure | Realistic life | Note |
|---|---|---|
| Indoors, dry, no direct sun | 10–15 years | The bottle outlives most process changes |
| Indoors, skylights / direct sun | 8–12 years | Rotate the containers occasionally |
| Outdoors, fully covered | 9–14 years | A cover is the highest-return intervention there is |
| Outdoors, shaded north side | 7–10 years | Orientation matters as much as cover |
| Outdoors, partial sun | 5–7 years | One face chalks before the other |
| Outdoors, full sun | 3–5 years | Chalky, boardy wall; sudden failures |
| Outdoors, full sun + freeze cycles | 2–4 years | The worst combination we see |
Filled weights — check before the lot arrives
| Product | SG | 275 gal filled | 330 gal filled | 550 gal filled |
|---|---|---|---|---|
| Acetone | 0.79 | 1,883 lb | 2,273 lb | 3,756 lb |
| Ethanol | 0.79 | 1,883 lb | 2,273 lb | 3,756 lb |
| Kerosene | 0.81 | 1,927 lb | 2,327 lb | 3,845 lb |
| Citrus terpene oil | 0.84 | 1,993 lb | 2,407 lb | 3,978 lb |
| Diesel fuel | 0.85 | 2,016 lb | 2,433 lb | 4,022 lb |
| Mineral oil, hydraulic | 0.88 | 2,082 lb | 2,514 lb | 4,155 lb |
| Biodiesel B100 | 0.88 | 2,082 lb | 2,514 lb | 4,155 lb |
| Concrete release agent | 0.89 | 2,104 lb | 2,540 lb | 4,200 lb |
| Gear oil | 0.90 | 2,126 lb | 2,567 lb | 4,244 lb |
| Canola oil | 0.91 | 2,148 lb | 2,594 lb | 4,289 lb |
| Soybean / olive oil | 0.92 | 2,170 lb | 2,620 lb | 4,333 lb |
| Flavour concentrate | 0.95 | 2,237 lb | 2,700 lb | 4,466 lb |
| Amine corrosion inhibitor | 0.98 | 2,303 lb | 2,780 lb | 4,599 lb |
| Water | 1.00 | 2,347 lb | 2,834 lb | 4,688 lb |
| Antifoam emulsion | 1.00 | 2,347 lb | 2,834 lb | 4,688 lb |
| Quaternary sanitiser | 1.01 | 2,369 lb | 2,860 lb | 4,732 lb |
| Asphalt emulsion | 1.01 | 2,369 lb | 2,860 lb | 4,732 lb |
| Maple sap | 1.02 | 2,391 lb | 2,887 lb | 4,777 lb |
| Non-ionic surfactant | 1.03 | 2,413 lb | 2,914 lb | 4,821 lb |
| Milk / dairy intermediate | 1.03 | 2,413 lb | 2,914 lb | 4,821 lb |
| Car wash soap concentrate | 1.04 | 2,436 lb | 2,941 lb | 4,865 lb |
| Propylene glycol | 1.04 | 2,436 lb | 2,941 lb | 4,865 lb |
| Anionic surfactant | 1.05 | 2,458 lb | 2,967 lb | 4,910 lb |
| Apple cider | 1.05 | 2,458 lb | 2,967 lb | 4,910 lb |
| Spent grain slurry | 1.05 | 2,458 lb | 2,967 lb | 4,910 lb |
| Laundry detergent | 1.06 | 2,480 lb | 2,994 lb | 4,954 lb |
| Flexographic ink | 1.08 | 2,524 lb | 3,047 lb | 5,043 lb |
| Wine / must | 1.08 | 2,524 lb | 3,047 lb | 5,043 lb |
| Acrylic adhesive emulsion | 1.08 | 2,524 lb | 3,047 lb | 5,043 lb |
| Urea solution (DEF) | 1.09 | 2,546 lb | 3,074 lb | 5,087 lb |
| Alkaline degreaser | 1.10 | 2,568 lb | 3,101 lb | 5,132 lb |
| Humic acid | 1.10 | 2,568 lb | 3,101 lb | 5,132 lb |
| Tomato paste | 1.10 | 2,568 lb | 3,101 lb | 5,132 lb |
| Ethylene glycol | 1.11 | 2,590 lb | 3,127 lb | 5,176 lb |
| Peracetic acid sanitiser | 1.12 | 2,612 lb | 3,154 lb | 5,220 lb |
| Fruit purée | 1.12 | 2,612 lb | 3,154 lb | 5,220 lb |
| Hydrogen peroxide 35% | 1.13 | 2,634 lb | 3,181 lb | 5,265 lb |
| Acid descaler | 1.14 | 2,657 lb | 3,207 lb | 5,309 lb |
| Hydrochloric acid 31% | 1.16 | 2,701 lb | 3,261 lb | 5,398 lb |
| Glyphosate concentrate | 1.17 | 2,723 lb | 3,287 lb | 5,442 lb |
| Brine 23% / soy sauce | 1.20 | 2,789 lb | 3,368 lb | 5,575 lb |
| Sodium hypochlorite 12% | 1.21 | 2,811 lb | 3,394 lb | 5,620 lb |
| Phosphate coating | 1.22 | 2,833 lb | 3,421 lb | 5,664 lb |
| Pigment dispersion | 1.25 | 2,900 lb | 3,501 lb | 5,797 lb |
| Nickel plating solution | 1.25 | 2,900 lb | 3,501 lb | 5,797 lb |
| Foliar micronutrient | 1.25 | 2,900 lb | 3,501 lb | 5,797 lb |
| Glycerine | 1.26 | 2,922 lb | 3,528 lb | 5,841 lb |
| Sulphuric acid 35% | 1.26 | 2,922 lb | 3,528 lb | 5,841 lb |
| Sodium hydroxide 25% | 1.27 | 2,944 lb | 3,554 lb | 5,886 lb |
| UAN 28 | 1.28 | 2,966 lb | 3,581 lb | 5,930 lb |
| Potassium acetate de-icer | 1.28 | 2,966 lb | 3,581 lb | 5,930 lb |
| Latex paint | 1.30 | 3,010 lb | 3,634 lb | 6,019 lb |
| UAN 32 fertiliser | 1.32 | 3,054 lb | 3,688 lb | 6,108 lb |
| Magnesium chloride de-icer | 1.32 | 3,054 lb | 3,688 lb | 6,108 lb |
| Liquid sugar / maple syrup | 1.33 | 3,076 lb | 3,715 lb | 6,152 lb |
| Ammonium thiosulphate | 1.33 | 3,076 lb | 3,715 lb | 6,152 lb |
| Aluminium sulphate | 1.33 | 3,076 lb | 3,715 lb | 6,152 lb |
| Juice concentrate (70 Bx) | 1.35 | 3,121 lb | 3,768 lb | 6,241 lb |
| Polyaluminium chloride | 1.35 | 3,121 lb | 3,768 lb | 6,241 lb |
| Liquid starter 10-34-0 | 1.38 | 3,187 lb | 3,848 lb | 6,374 lb |
| High-fructose corn syrup | 1.38 | 3,187 lb | 3,848 lb | 6,374 lb |
| Calcium chloride brine | 1.38 | 3,187 lb | 3,848 lb | 6,374 lb |
| Sodium silicate | 1.39 | 3,209 lb | 3,875 lb | 6,418 lb |
| Molasses / honey | 1.42 | 3,275 lb | 3,955 lb | 6,551 lb |
| Ferric chloride 40% | 1.42 | 3,275 lb | 3,955 lb | 6,551 lb |
| Calcium nitrate solution | 1.43 | 3,297 lb | 3,981 lb | 6,596 lb |
| Potassium hydroxide 45% | 1.46 | 3,364 lb | 4,061 lb | 6,729 lb |
| Potassium thiosulphate | 1.47 | 3,386 lb | 4,088 lb | 6,773 lb |
| Sodium hydroxide 50% | 1.52 | 3,496 lb | 4,222 lb | 6,995 lb |
| Phosphoric acid 75% | 1.58 | 3,629 lb | 4,382 lb | 7,261 lb |
| Sulphuric acid 93% | 1.83 | 4,181 lb | 5,049 lb | 8,370 lb |
Seal selection — what to replace on arrival
| Medium | EPDM | Viton (FKM) | Silicone | PTFE | We would fit |
|---|---|---|---|---|---|
| Water, potable & process | Excellent | Excellent | Excellent | Excellent | EPDM |
| Dilute acids (<10%) | Good | Excellent | Fair | Excellent | EPDM |
| Concentrated acids | Poor | Good | Poor | Excellent | PTFE |
| Caustic soda, alkalis | Excellent | Fair | Fair | Excellent | EPDM |
| Liquid fertiliser, UAN | Excellent | Good | Fair | Excellent | EPDM |
| Glycols, coolants, de-icer | Excellent | Good | Good | Excellent | EPDM |
| Surfactants, detergents | Excellent | Good | Good | Excellent | EPDM |
| Edible oils, fats | Poor | Excellent | Poor | Excellent | Viton |
| Mineral oils | Poor | Excellent | Poor | Excellent | Viton |
| Aromatic solvents | Poor | Excellent | Poor | Excellent | Viton |
| Chlorinated solvents | Poor | Good | Poor | Excellent | Viton / PTFE |
| Ketones (acetone, MEK) | Fair | Poor | Poor | Excellent | PTFE |
| Alcohols | Good | Good | Good | Excellent | EPDM |
| Fuels, diesel, kerosene | Poor | Excellent | Poor | Excellent | Viton |
| Juice & syrup concentrate | Excellent | Excellent | Excellent | Excellent | FDA EPDM |
| Brine, pickling liquor | Good | Excellent | Fair | Excellent | Viton |
| Hot fill 140–180°F | Fair | Excellent | Excellent | Excellent | Viton / silicone |
| Hydrogen peroxide (dilute) | Good | Fair | Fair | Excellent | EPDM / PTFE |
| Sodium hypochlorite | Good | Good | Fair | Excellent | EPDM |
| Steam / CIP chemistry | Excellent | Fair | Good | Excellent | EPDM |
| Outdoor weathering & ozone | Excellent | Good | Excellent | Excellent | EPDM |
Periodic test requirements, if you ship regulated liquids
| Reference | Title | What it covers | Who it binds |
|---|---|---|---|
| 49 CFR 172.101 | Hazardous materials table | Classification and authorised packaging reference | Shippers |
| 49 CFR 172 Subpart H | Training | Who must be trained, in what, how often, with records | Any hazmat employer |
| 49 CFR 173 | Shippers — general requirements by class | Whether an IBC is authorised for your entry | Shippers |
| 49 CFR 178 Subpart N | IBC design types, testing and marking | What the plate means and how it was earned | Makers, reconditioners |
| 49 CFR 180.352 | Periodic inspection, testing, repair & remanufacture | 2.5-year visual, 5-year leakproofness + full inspection | Owners, shippers |
| 40 CFR 261.7 | RCRA empty containers | When a container counts as empty; P-list triple rinse | Generators |
| 40 CFR 262 | Generator standards | Waste determination, manifesting, accumulation | Generators |
| 21 CFR 177.1520 | Olefin polymers | HDPE compliance for food contact | Food users |
| 21 CFR 177.2600 | Rubber articles for repeated use | Gasket and seal compliance for food contact | Food users |
| 21 CFR 110 / 117 | Good manufacturing practice | Handling, storage, sanitation programmes | Food users |
| NSF/ANSI 61 | Drinking water system components | Potable-contact material evaluation | Water utilities |
| 29 CFR 1910.1200 | Hazard communication | Workplace labelling and safety data sheets | Everyone |
| 29 CFR 1910.146 | Permit-required confined spaces | Entry into tanks and vessels | Anyone cleaning containers |
| 29 CFR 1910.178 | Powered industrial trucks | Forklift operation and certification | Yards and docks |
| ANSI/ITSDF B56.1 | Low-lift and high-lift trucks | Capacity ratings and load centres | Yards and docks |
| ANSI MH16.1 | Steel storage racking | Beam capacity, deflection, inspection | Warehouses |
| PA Title 25 Ch. 95 | Wastewater treatment requirements | Industrial discharge standards in Pennsylvania | Wash lines |
| ISPM-15 | Wood packaging in international trade | Heat treatment and marking of timber pallets | Exporters |
Documents to insist on
| Document | What it contains | When you get it |
|---|---|---|
| Written quotation | Unit price by grade, freight as its own line, validity, and the conditions that would change it | Before you order |
| Grade certificate | Assigned grade against our published definitions, per unit serial | With the order |
| Leak & pressure test record | Test pressure, hold time, outcome, per serial | With the order |
| Hydrostatic test certificate | 100% of food-line units, recorded against serial | Food-grade orders |
| Prior-contents declaration | Named last product, generating site, signature | Anything we collected |
| Wash programme record | Bay, programme, temperature, chemistry, cycle time | Reconditioned & contract work |
| Rinse verification | Final-rinse pH and conductivity | Reconditioned & contract work |
| Component specification | Valve, gasket, lid materials with compliance references | Food-grade orders |
| Photograph set | The actual units on the rack before loading | Every order |
| Weight ticket | Certified-scale gross weight and count | Collections and cleanouts |
| Diversion certificate | Unit counts, weights by stream, destination routes, dates | End-of-life batches |
| Certificate of insurance | GL, auto, cargo, workers' comp; additional insured | Before a crew arrives |
| Reconditioner marking detail | Code, date, design type | Re-marked units |
| Lease schedule | Count, grade, dates, weekly rate, return condition, replacement charge | Leases |