Materials to be avoided in microwave oven
Utensils
Aluminum
Food carton
trimmed utensils
Metal twist ties
Paper bags
Plastic foam
Wood
Metal shields the food from microwave energy.
arcing.
May cause a fire in the oven.
Plastic foam may melt or contaminate the liquid
high temperature.
Wood will dry out when used in the microwave
May cause arcing. Transfer food into microwave-
May cause arcing. Transfer food into microwave-
May cause arcing and could cause a fire in the oven.
Remarks
tray
safe dish.
handle
with metal
safe dish.
Metal or metal-
Metal trim may cause
inside when exposed to
oven and may split or crack.
Microwave-safe only. Follow the manufacturer’s
Some plastic containers soften, as the food inside
gets hot. "Boiling bags" and tightly closed plastic
slit, pierced or vented as directed
Plastic
instructions. Should belabeled "Microwave Safe".
bags should be
by package.
Microwave-safe only. Use to cover food during
wrap to touch food.
Thermometers
Microwave-safe only (meat and candy thermometers).
Wax paper
Use as a cover to prevent splattering and retain
Plastic wrap
cooking to retain moisture. Do not allow plastic
moisture.
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