The Plain-English IBC Glossary.
The IBC industry has its own little vocabulary, and most of it is borrowed from chemistry, ASTM and trucking. Here is every piece of jargon you’re likely to read on this site, translated.
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ASTM D2412
The American Society for Testing and Materials standard for parallel-plate loading of plastic containers. We use it to confirm an IBC bottle still holds its dimensional shape under load.
Birth Certificate
Our one-page document shipped with every reconditioned tote. Lists prior contents (when known), wash log, leak test, inspector name, and tote tracking number.
Bunghole
Industry slang for the fill opening on top of an IBC bottle. Usually 6" with a screw-on EPDM-gasketed cap.
Caged composite
The most common IBC format — an HDPE bottle inside a galvanized steel cage on a pallet. The “composite” refers to the multi-material construction, not the resin.
Cam-lock
Quick-connect coupling popular for tank-truck loading and unloading. Available in 2" and 3" outlet adapters for IBCs.
CIP (Clean-in-Place)
A wash cycle performed without disassembling the tank. Standard for stainless IBCs going into food and beverage service.
Dust cap
The small plastic cap that protects the valve outlet between fills. Cheap, easy to lose, surprisingly important.
EPDM
Ethylene Propylene Diene Monomer — the rubber compound used for valve seats and fill cap gaskets. Resists most aqueous and dilute chemicals.
Fill cap
The big screw cap on the top of the bottle. Usually 6", with an EPDM gasket. Tamper-evident on request.
Food-grade
A tote that has been documented and certified clean enough to refill with human food. Requires a hot-wash with documented temperature, dwell time, and conductivity rinse.
Galvanized
Steel coated with a thin layer of zinc to prevent rust. The standard cage material for caged composite IBCs.
Grade A / B / C
IBC Denver’s in-house cosmetic grading scale. Grade A is like-new, B has light cosmetic wear, C is honest workhorse.
HDPE
High-Density Polyethylene — the plastic the bottle is blow-molded from. Tough, flexible, recyclable.
Hot-wash
A 165°F caustic recirculating wash cycle, typically 12 minutes long. The core of our reconditioning process.
Intermediate Bulk Container
The full name of an IBC. “Intermediate” because it sits between drums (small) and tank trucks (large).
Leak test
Filling a reconditioned tote with water and visually inspecting it for seepage. Pass/fail.
Mauser, Schutz, Greif
Three of the major global IBC manufacturers. Their bottles and cages are mostly interchangeable for parts and accessories.
NPT / BSP
Two pipe threading standards — National Pipe Taper (US) and British Standard Pipe (UK/EU). Most North American IBCs use NPT.
Pallet jack
The hand-pumped wheeled forklift used to move pallets short distances. An IBC tote is sized for pallet-jack handling.
Reborn
Our internal name for a tote that has been through the full 9-stage reconditioning process and is back in service.
Sanitize
A separate stage in our reconditioning process for food-grade totes. Not the same as hot-wash; sanitize uses food-spec sanitizer.
SDS
Safety Data Sheet — the document that describes a chemical’s composition, hazards and handling.
Stainless 304 / 316
Two grades of stainless steel. 304 is the workhorse for sanitary/food. 316 adds molybdenum for chloride resistance.
Tare weight
The empty weight of an IBC tote. Roughly 125 lbs for a 275-gallon caged composite, 145 lbs for a 330-gallon.
Tri-clamp
A sanitary stainless coupling system. Common on stainless IBCs for dairy, brewing and pharma.
UN-rated
A tote that has passed United Nations testing for hazardous-materials transport. Required for most hazmat freight.
Valve seat
The internal sealing surface of the butterfly or ball valve. The most common cause of a leaky tote — and almost always cheaply replaceable.
Z-cage
A specific cage design popular on European IBCs, with diagonal bracing for extra rigidity.
Bunghole
Industry slang for the fill opening on the top of an IBC bottle. Usually 6 inches in diameter and closed with a screw cap.
Birth Certificate
Our internal name for the one-page document that ships with every reconditioned tote, listing prior contents, wash log, leak test result, inspector signature, and tote tracking number.
Bay
The reconditioning area where wash, inspection, and certification happen. We have one main bay at our Denver yard.
Cap, fill
The screw cap on the top of the bottle, usually 6 inches in diameter, with an EPDM gasket. Closes the bunghole.
Cap, dust
The small protective cap that fits over the valve outlet between fills. Inexpensive but easy to lose.
Cage
The galvanized steel exterior structure of a caged composite IBC. Provides structural support and forklift access.
CIP (Clean-In-Place)
A wash protocol where the inside of a tank is cleaned without disassembly, using recirculating wash chemistry. Standard for sanitary applications.
Caged composite
The most common IBC format — a HDPE plastic bottle inside a galvanized steel cage on a pallet. Sometimes shortened to "caged" or "composite."
Dust cap
See "Cap, dust." A protective plastic cap on the valve outlet.
Drum, 55-gallon
The smaller alternative bulk packaging format. Five drums hold the same volume as one 275-gallon IBC tote.
EPDM
Ethylene Propylene Diene Monomer — the rubber used for valve seats and fill cap gaskets in IBC totes. Resists most aqueous chemistry.
Fill cap
See "Cap, fill." The 6-inch screw cap on the top of the bottle.
Food-grade
A certification level indicating that a tote has been hot-washed, sanitized, and documented to a standard suitable for refilling with food contact applications. We offer food-grade reconditioning as a standard service.
Galvanizing
A zinc coating applied to the steel cage to prevent rust. Hot-dip galvanizing is the most common method.
Grade A / B / C
Our internal cosmetic grading system. Grade A is like-new, Grade B is light wear, Grade C is honest workhorse condition. Mechanical soundness is the same across all three.
HDPE
High-Density Polyethylene — the plastic the bottle is made from. Recyclable, food-safe, inert to most chemistry.
Hot wash
A wash cycle using heated wash water (typically 165°F) and food-spec caustic. The core stage of our reconditioning process.
Intermediate Bulk Container
The full name. Abbreviated to IBC.
Leak test
A water-fill test to verify that a reconditioned tote does not leak under load. Performed on every tote we recondition.
Mauser, Schutz, Greif, Hoover
The four major manufacturers of caged composite IBCs in North America. Their parts are mostly interchangeable.
NPT / BSP
Two pipe-thread standards. NPT is National Pipe Taper (US standard, slightly tapered). BSP is British Standard Pipe (parallel walls). Most North American totes use NPT.
Pallet, hardwood
The original IBC pallet style. Cheap, repairable, but susceptible to moisture rot.
Pallet, plastic
A more expensive but moisture-immune alternative pallet. Common for food-grade and export.
Pallet, steel-shod
A composite-deck pallet with steel skids. Heavy, expensive, essentially immortal.
Pelletized
Granulated HDPE that has been melted and re-extruded into pellet form for re-introduction into manufacturing. The end-state of recycled HDPE bottle material.
Reborn
Our internal term for a tote that has gone through the full 9-stage reconditioning cycle and is back in service.
Rebottling
The process of removing a tired HDPE bottle from an existing cage and replacing it with a fresh bottle. Used when the bottle is at end of life but the cage and pallet are still excellent.
Sanitary finish
A polished interior surface on a stainless tank, typically 32 microinches Ra or smoother, suitable for CIP cleaning in food/dairy/pharma applications.
Specific gravity
The density of a liquid relative to water. Water = 1.0. Heavier-than-water contents like sulfuric acid (1.84) put more load on the tote and the forklift.
Tare weight
The empty weight of an IBC tote, including bottle, cage, pallet, valve, and caps. About 125 lbs for a 275-gallon caged composite.
Tracking number
A unique number assigned to each tote at intake, printed on a tag that stays with the tote for life. Used to look up the wash log, prior contents, and ownership history.
Triple rinse
A cleaning step where the tote receives three sequential potable-water rinses to remove residual wash chemistry. Conductivity-tested at the final rinse.
UN code
A series of letters and numbers stamped on the data plate that encodes the manufacturer, packaging group, year of manufacture, and certification status of an IBC. Required for hazmat applications.
Valve, butterfly
The default outlet valve on most caged composite IBCs. Quarter-turn handle, EPDM seat, 2-inch standard diameter.
Valve, ball
An alternative outlet valve with a hollow ball that rotates to open or close the flow. More resistant to particulate clogs than a butterfly valve.
Validation
In a pharma context, the documented process of confirming that packaging meets a written specification. Reconditioned totes are usually not validated to a specific monograph.
Wash log
A record of the temperature, dwell time, and chemistry of the wash cycle each tote went through. Part of the Birth Certificate.
Why this glossary exists
The IBC industry has a vocabulary that takes about a year of working in it to learn. Some of the terms are technical (UN packaging codes, ASTM standards, surface roughness in microinches Ra). Some are jargon shortcuts ("rebottle," "Birth Certificate," "the bay"). Some are borrowed from adjacent industries (drum reconditioning, sanitary process work, freight). For a customer making their first IBC purchase, the vocabulary is one of the bigger barriers to confidence. So we wrote this page.
If you have read every term on this page, you now know more about IBC tote terminology than 95% of the people who buy them. Including most procurement managers at companies that order them by the hundred. The vocabulary is not actually hard once you have seen it written down — it just looks like a different language until then.
Terms we deliberately left out
There are a few jargon shortcuts that get used in the industry but that we have deliberately left out of this glossary because they are misleading or actively harmful.
- "Like new" — used by some sellers to describe used totes. We do not use it because it is meaningless without a grading rubric.
- "Sanitized" — used loosely. We use it in a specific sense to refer to the food-spec sanitization stage of our 9-stage process, with documentation. Other sellers may use it to mean "rinsed."
- "Pre-owned" — a euphemism that adds nothing. We just say "used."
- "Eco-friendly" — too vague to mean anything. We try to use specific carbon and material numbers instead.
- "Premium" — the same. We say "Grade A" because it has a defined meaning.
If you encounter any of these terms from another supplier, ask them to define what they mean in writing. The honest ones will give you a specific answer.