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Make sure all cookware used in your
microwave oven is suitable for
microwaving. Most glass casseroles,
cooking dishes, measuring cups,
custard cups, pottery or china
dinnerware which does not have
metallic trim or glaze with a metallic
sheen can be used. Some cookware
is labeled “suitable for
microwaving.”
• If you are not sure if a dish is
microwave-safe, use this test: Place
in the oven both the dish you are
testing and a glass measuring cup
filled with 1 cup of water—set the
measuring cup either in or next to
the dish. Microwave 1 minute at
high. If the dish heats, it should
not be used for microwaving. If the
dish remains cool and only the
water in the cup heats, then the
dish is microwave-safe.
• Do not use recycled paper
products. Recycled paper towels,
napkins and waxed paper can
contain metal flecks which may
cause arcing or ignite. Paper
products containing nylon or
nylon filaments should be avoided,
as they may also ignite.
• Some styrofoam trays (like those
that meat is packaged on) have a
thin strip of metal embedded in
the bottom. When microwaved,
the metal can burn the floor of the
oven or ignite a paper towel.
• Do not use the microwave to dry
newspapers.
• Not all plastic wrap is suitable for
use in microwave ovens. Check the
package for proper use.
• Paper towels, waxed paper and
plastic wrap can be used to cover
dishes in order to retain moisture
and prevent spattering. Be sure to
vent plastic wrap so steam can
escape.
• Cookware may become hot
because of heat transferred from
the heated food. Pot holders may
be needed to handle the
cookware.
• “Boilable” cooking pouches and
tightly closed plastic bags should
be slit, pierced or vented as
directed by package. If they are
not, plastic could burst during or
immediately after cooking,
possibly resulting in injury. Also,
plastic storage containers should
be at least partially uncovered
because they form a tight seal.
When cooking with containers
tightly covered with plastic wrap,
remove covering carefully and
direct steam away from hands and
face.
• Use foil only as directed in this
guide. TV dinners may be
microwaved in foil trays less than
3/4″ high; remove the top foil
cover and return the tray to the
box. When using foil in the
microwave oven, keep the foil at
least 1 inch away from the sides of
the oven.
If you use a meat
thermometer while cooking,
make sure it is safe for use
in microwave ovens.
Microwave-Safe
Cookware
How to Test for a
Microwave-Safe Dish
Important Safety Information
Special Notes About Microwaving