What we have written on the cold chain66 / 154

GEBHARDT sets the freezing temperature at least 5 °C below the melting point. For the -14 plate that is -19 °C; -22 °C leaves a margin, but the time depends on your chamber.

A -3 °C plate freezes through at -8 °C or colder, and a -21 °C plate needs -26 °C. A worked example shows what one degree is worth in time, and a logger in your chamber confirms it.

Do not assume polyethylene is suitable; check the exact model's construction, use limits, and care instructions.

Volume alone does not show set capacity; compare model, temperature band, fitted count, and load together.

Temperature change and phase change are different energy processes. Do not calculate an exact plate's route performance from concepts alone.

A temperature reading alone does not show that a phase change is complete. Verify plate condition under maker procedure and isolate uncertainty.

If liquid slides inside the plate when you tilt it, the filling has not solidified. A solid plate counts as ready only when freezer temperature and time are on record.

If a phase point is absent from a matrix, do not assume stock or availability. Confirm product target, size and container fit with the supplier.

GEBHARDT eutectic plates are filled with a non-toxic solution of salt and water. The answer to give when your technologist asks about the contents, and the document to request.

A eutectic plate gives up its cold at its melting point. How much of it the load can use depends on where that melting point sits against the band the product accepts.

An energy label alone does not determine transport duration. Assess product conditions, load and route records alongside the plate documentation.

Colour or phase point alone does not identify a plate's contents or concentration. Match the product code and data sheet before ordering.