GB-15
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 re in the
oven�
Paper bags May cause a re 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�