How to Read an IBC Tote Data Plate

Every compliant IBC tote carries a data plate, usually a metal or durable label riveted to the steel cage. It is the single most information-dense object on the container, and learning to read it turns a mystery tote into a known quantity in about thirty seconds.

Here is a field-by-field walkthrough so you can extract everything the plate is telling you and spot when a tote should be pulled from service.

The UN certification block

The most important line is the UN marking. It begins with the UN symbol or the letters UN, followed by the type code and packing-group letter, for example 31HA1 with an X, Y, or Z.

• The type code, such as 31HA1, gives container type, contents state, and materials
• The packing-group letter shows the maximum hazard level permitted
• A specific gravity value indicates the densest liquid the tote was tested for
• A hydraulic test pressure, in kilopascals, records the pressure the design was proven against

Identity and dates

The plate also establishes the tote’s identity and age. These fields let you trace the container and judge where it sits in its life cycle.

1. Manufacturer name and country of manufacture
2. A serial number or unique identifier for traceability
3. The date of manufacture, often shown as month and year
4. The country that authorized the UN approval and the approval reference

The manufacture date matters because many facilities set an age limit for hazmat service and because the periodic test intervals count from defined reference points. An old tote is not automatically unsafe, but it deserves closer inspection.

Capacities and load limits

Several fields define how much the tote can hold and how it can be handled. Exceeding any of these is how totes fail in the field.

• Maximum capacity, commonly around 275 or 330 gallons for standard totes
• Maximum permitted gross mass, the combined weight of tote plus contents
• Maximum stacking load, the weight the tote can bear when others are stacked on it
• The tare weight of the empty container

The stacking load is frequently misread. It tells you how much weight the tote can support from above, which governs how high you may safely stack filled totes in a warehouse. Ignore it and a bottom tote can buckle under the stack.

The retest record

For totes in hazmat service, the plate or an adjacent marking carries the periodic test dates. These are the entries that quietly determine whether a tote is still legal today.

• The 2.5-year leakproofness test date
• The 5-year inspection and test date
• The initials or mark of the facility that performed each test

Reading data plates well is what lets our reconditioning team route each tote to the right second life, whether that is another round of food service, industrial duty, or recycling. The plate tells the tote’s story, and honoring it keeps good containers in circulation.