11
Materials to be avoided in microwave oven
Utensils Remarks
Aluminum tray
May cause arcing. Transfer food into microwave-
safe dish.
Food carton with metal
handle
May cause arcing. Transfer food into microwave-
safe dish.
Metal or metal-trimmed
utensils
Metal shields the food from microwave energy.
Metal trim may cause arcing.
Metal twist ties
May cause arcing and could cause a fire in the
oven.
Paper bags May cause a fire in the oven.
Plastic foam
Plastic foam may melt or contaminate the liquid
inside when exposed to high temperature.
Wood
Wood will dry out when used in the microwave
oven and may split or crack.
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