UN-approved containers are designed and tested for specific hazardous materials and transport conditions. Selecting the right container is essential, but it is only one part of a safe packaging line.
This guide outlines the steps to take before choosing containers, closures and machinery.
Step 1: identify the product risk
Start with the safety data sheet. Identify the hazard class, packing group, flash point, corrosiveness, viscosity, temperature at filling and any compatibility concerns with plastics, metals, seals or liners.
This information determines whether the pack requires special handling, ventilation, ATEX controls, spill containment or specific labelling.
Step 2: match the container and closure
The container must be compatible with the product and suitable for transport. The closure must be applied consistently, with correct torque or sealing force. Caps, liners and induction seals should be tested as a complete system.
Step 3: choose the right packaging type
Single packaging, combination packaging and composite packaging each serve different hazardous-goods needs. Select the type based on material risk, inner pack design, outer protection, quantity and transport mode.
Step 4: plan labelling and documentation
Hazard labels, UN markings, batch codes and courier or transport labels must remain legible and correctly placed. Labelling equipment should be chosen with container shape, surface, label size and compliance requirements in mind.
Step 5: test the full process
Run real samples before committing to the final specification. Check filling accuracy, drips, cap torque, seal integrity, label placement, conveyor stability and operator safety.