GE 18 Owner's Manual page 10

About the controls on the refrigerator.
How To Test Temperatures
Food Storage
10
Use the milk test for the fresh food compartment. Place a container
of milk on the top shelf and check it a day later. If the milk is too
warm or too cold, adjust the temperature controls.
Use the ice cream test for the freezer compartment. Place a
container of ice cream in the center of the freezer and check it after
a day. If it's too hard or too soft, adjust the temperature controls.
After changing the controls, allow 24 hours for the refrigerator to reach the
temperature you have set.
The type of packaging used and the storage temperatures will affect
how long food will keep in the refrigerator.
New food storage guidelines are constantly being developed.
Consult the County Extension Service for the latest information on freezing and
storing foods.