Determination of the migration test temperature (SML and GM) for microwave applications
Tests of specific migration (SML) and overall migration (OM) on plastic articles which are intended for the use in microwave ovens shall be carried out in accordance with EN 1186-1 under the appropriate time and temperature conditions in a conventional oven. For this purpose, the temperature occurring under the worst foreseeable conditions of use at the food/packaging interface during heating of the article under the specified conditions of use shall be determined. This is done using a calibrated microwave oven at the specified heating power.
In short — AI-generated
This test determines the maximum temperature reached at the interface between the packaging and the food during microwave heating. To measure this, the packaging is filled with a food simulant and heated in a calibrated microwave oven under worst-case conditions, while temperature sensors record the exact thermal load on the material.
The resulting temperature value is used to select the correct test conditions for subsequent migration testing (SML and OM) according to EN 1186-1. This ensures that the migration tests accurately reflect the actual stress the packaging material experiences during real-world microwave use.
Text is AI-generated; based on test method data curated and verified by Innoform.