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Suitable Containers for Microwave Ovens
Plastics
When purchasing plasticware, make sure that it is suitable for use in a microwave oven. Plastic containers
must only be used in microwave mode alone. Plastics must be heat-resistant to a minimum of 110 °C.
Otherwise the plastic may melt and fuse with the food. Special plastic utensils designed for use in
microwave ovens are available from good retail outlets. Melamine is not suitable as it absorbs energy and
heats up. Disposable containers, such as trays made from polystyrene, can only be used for very short
timed warming and reheating of food. Plastic boiling bags can be used for cooking and reheating. They
should be pierced beforehand so that steam can escape. This prevents a build-up of pressure and
reduces the risk of the bag bursting. Roasting bags and tubes can also be used. Roasting tubes should
be about 40 cm longer and roasting bags about 20 cm longer than the food being roasted, and carefully
tied with string. Turn the ends over and secure them. The bag should be pierced according to the
manufacturer’s instructions. Do not use metal clips, plastic clips containing metal parts or paper ties
containing wire. There is a danger that they will ignite when heated.
Wood
Wooden dishes are not suitable. Moisture contained in the wood evaporates when exposed to microwave
energy, causing the wood to dry and crack.
Disposable containers
Only those plastic disposable containers which are specified by the manufacturer as suitable for use in a
microwave oven may be used. Do not leave the oven unattended when reheating or cooking food in
disposable containers made of plastic, paper or other inflammable materials. Disposable containers are
not always recyclable or bio-degradable.
Testing dishes for their suitability
If in doubt as to whether glass, earthenware or porcelain plates or dishes are suitable for use in a
microwave oven, a simple test can be performed:
Place the item you wish to test in the centre of the oven, fill a suitable glass with water and also place this
in the oven.
- Close the door.
- Turn the power selector to 900 W.
- Enter a time of 30 seconds with the time selector.
- Press the Start button.
At the end of the test, the water in the glass should be warm and the dish cool. If the dish is hot the water
cold it would be unwise to use the dish.
If a crackling noise is heard accompanied by sparks during the test, switch the appliance off immediately
(press button Stop/C twice).
Any crockery which causes this reaction is unsuitable for use with microwave power.
If any doubt exists about the suitability of containers, please contact the supplier.
This test cannot be used to check whether items with hollow knobs or handles are suitable for use with
microwave power.
13ILVE Operating Manual
IV600BIM Microwave Manual 2014 V1.indd 13 22/05/2014 5:45 pm
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