EN-13
MATERIALS CAN NOT BE USED 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.