What we have written on the cold chain54 / 154

Record the waiting conditions, use an approved holding location and follow procedure before opening. Do not assume a universal time or temperature limit.

Document condition, identity and records while closed; open where measurement and quality checks are ready and goods can be moved promptly.

A closing sound and a closed lid are not the same thing. Three short checks on the latch, gasket and middle of the lid, plus one line on the dispatch form, show the difference.

A void may affect product movement and the measurement point; do not treat a partial load as a validated full load.

In most fleets the handover list ends with fuel and paperwork. On a cold load the container, the plate and the lid belong to the handover too; the plate's melting point and freezing target are in the table.

For frozen food the limit is -18 °C, and a short rise in distribution may not exceed 3 °C. Because the lid opens at every stop, the box is chosen for the final stop.

Under Commission Regulation (EU) 2024/2895 the not-detected-in-25-g criterion applies at every stage while the product is on the market during its shelf life. The shipping temperature log is the field input to that shelf-life evidence.

A bag is enough if the product stays at -18 °C, at most 3 °C above it, from the moment it leaves the freezer until it enters the recipient's freezer. The time that counts is the whole timeline, not the driving time.

Choose by product condition, actual carton suitability, cold source, closure, preparation and cost per completed use rather than litres alone.

Follow product requirements and a validated packout; check the container, coolant, layout and run record together.

A box's duration comes from what it was tested with: product, load, ambient conditions and coolant. The whole route has to fit inside the verified time.

A cold-chain box slows heat ingress during transport. It does not cool by itself; it becomes a system with the goods, the coolant and the route.