How long does ISOTEC stay cold? Measure it on your route

Hold time depends on starting conditions, plate layout, fill and openings. Measure your acceptance curve on the longest route.

10 September 2021Updated 23 September 2026

Short answer

One duration does not fit every load and route. GEBHARDT states up to 24 hours for certain suitable arrangements; a logger test with your actual load, plates and route must confirm your result. Set acceptance limits before testing.

Hold time is not determined by model name alone. Starting temperature, load, eutectic plate type and placement, ambient conditions and lid openings all affect the result.

GEBHARDT reports up to 24 hours of uninterrupted cold chain for certain suitable Isotec arrangements. This is not a guarantee for every load; match the model and conditions to the manufacturer's documentation.

The phrase suitable arrangement says the container does not work on its own: plates, rails and freezing racks are part of the curve too. GEBHARDT makes those parts in the same programme as the Isotec body.

Test the longest normal route with the actual product or equivalent thermal load and usual plate arrangement. Put a logger in the product zone and set target limits before starting. Record deliveries and lid openings too.

Review the test when load, plate layout or route changes.