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09
Materials to be avoided in microwave oven
Utensils
Aluminum tray
Food carton
with metal
handle
Metal or
metal-trimmed
utensils
Metal twist ties
Paper bags
Plastic foam
Wood
Remarks
May cause arcing. Transfer food into microwave-safe dish.
May cause arcing. Transfer food into microwave-safe dish.
Metal shields the food from microwave energy. Metal trim may
cause arcing.
May cause arcing and could cause a fire in the oven.
May cause a fire in the oven.
Plastic foam may melt or contaminate the liquid inside when
exposed to high temperature.
Wood will dry out when used in the microwave oven and may
split or crack.
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