The identity of a plate with a worn label can often be read without the label. On GEBHARDT plates the cap colour shows the melting point, and the temperature may also be embossed into the shell; the blue plate, for example, carries -21 °C.
| Melting point | Cap colour | Recommended freezing |
|---|---|---|
| -3 °C | Red | -8 °C |
| -14 °C | Yellow | -19 °C |
| -18 °C | Green | -23 °C |
| -21 °C | Blue | -26 °C |
A wrong identification shows up at freezing. A plate is frozen at least 5 °C below its melting point, and it delivers the expected cold only when the filling is fully solid; take a -21 °C plate for a -3 °C one, freeze it at -8 °C, and it ends up half frozen.
- Move the plate to a marked hold shelf. Record its ID, visible marks, location, date and the person who isolated it, with a photo.
- Compare cap colour, shell embossing, size, batch document and freezer movement record. If all show the same melting point, the identity is confirmed.
- If the marks conflict or none is readable, the plate does not return to use. Do not copy values from a similar plate; send its photo and size to Aris Makina and we will settle its identity together with GEBHARDT.
- Apply the new label where it survives washing and does not rub on the rail, and record who approved it and on what evidence.
A plate whose label keeps wearing off is a handling problem: look at washing, rail friction and storage, and keep different melting points on separate shelves. The decision belongs to the shift supervisor or quality officer, not the picker, and goes into a written record.