| Cookware | Microwave- | Comments | |
| Safe | |||
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Fast - Food Packaging |
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• | Polystyrene cups | | Can be used to warm food. Overheating | |
| containers |
| may cause the polystyrene to melt. | |
• Paper bags or newspaper | | May catch fire. | ||
• | Recycled paper or metal | | May cause arcing. | |
| trims |
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Glassware |
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• | | Can be used, unless decorated with a | ||
• | Fine glassware | | metal trim. Can be used to warm foods or | |
liquids. Delicate glass may break or crack if | ||||
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| heated suddenly. | |
• | Glass jars | | Must remove the lid. Suitable for warming | |
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| only. | |
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Metal |
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• | Dishes | | May cause arcing or fire. | |
• | Freezer bag twist ties | |
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Paper |
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• | Plates, cups, napkins and | | For short cooking times and warming. Also | |
| Kitchen paper |
| to absorb excess moisture. | |
• | Recycled paper | | May cause arcing. | |
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Plastic |
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• | Containers | | Particularly if | |
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| Some other plastics may warp or discolour | |
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| at high temperatures. Do not use Melamine | |
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| plastic. | |
• | Cling film | | Can be used to retain moisture. Should not | |
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| touch the food. Take care when removing | |
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| the film as hot steam will escape. | |
• | Freezer bags | | Only if boilable or | |
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| be airtight. Prick with a fork, if necessary. | |
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Wax or | | Can be used to retain moisture and | ||
Paper |
| prevent spattering. | ||
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“Arcing” is the microwave term for sparks in the oven.
: Recommended : Use Caution
: Unsafe