What we have written on the cold chain23 / 154

Check product instructions, plate condition and batch records rather than relying on surface frost.

Make container states, accessory matching and the final release check visible in the workflow.

The WHO guide starts from 12 fixed sensors; a medium-sized cold unit typically gets about 20 sensors plus one for ambient.

A central kitchen can carry portions, supporting goods and empty equipment to several points in one vehicle.

If a surface gets dusty again, measure its resistance first, then compare cleaning and ambient records at the same point.

Count trips between the cold area and dock for one shift, then group work to reduce avoidable repeat entries.

To separate the container's effect from the vehicle's, read run data crosswise: one container in several vehicles, one vehicle with several containers.

Using a common vehicle does not mean placing every product under one thermal condition.

Match device identity to reference, date, result and use decision; link certificate information to the relevant trip record.

Assess product requirements alongside packaging, stacking and route; a temperature record alone cannot explain shape or contact damage.

Sensor position, response and load produce different measurements; align measurement purpose and method before comparing.

Match actual ambient, loading and dwell conditions with the validated scenario; do not invent temperature or duration limits.