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because of the Mercury inside that becomes unusable after a period of time.

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Q: Why do refrigerator thermometers expire?
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Related questions

How do you measure refrigerator temperature?

Most refrigerators have a thermometer inside that will show the temperature. If there is not one, most stores sell refrigerator thermometers.


What is a refrigerator thermometer called?

They really don't have a name, so they are just called thermometers.


Are there any other uses for the expansion and contraction of matter?

it is used for bimetallic strip thermometers which is there in refrigerator and oven.


Can a meat thermometer be used in a refrigerator?

Not usually. An actual "meat" thermometer is not designed to be used in the refrigerator, nor are they generally of the appropriate temperature range.


What different kinds of thermometers are there?

There are 34 different types of thermometer that range from alcohol thermometers and ear thermometers to medical thermometers and electrical resistance thermometers.


What where the first thermometers?

Mecury thermometers


How are mercury thermometers used today?

Mercury thermometers are rarely used, except in lab thermometers. For human use, they have been replaced by dyed alcohol glass thermometers, or electronic digital thermometers.


Are digital and clinical thermometers same?

no,digital thermometers don't have mercury whereas clinical thermometers have mercury.


What are strip thermometers?

the thermometers which are used to find your temperature


Different types of thermometers?

Celsius and Fahrenheit Thermometers Clinical Thermometers Ear (Tympanic) thermometers Pacifier Thermometers Underarm or Oral Thermometers Food Thermometers Outdoor Thermometers Mechanism of Different Types of Thermometers Mercury and Alcohol Thermometers Digital Thermometers Alcohol thermometer Beckmann differential thermometer Bi-metal mechanical thermometer Electrical resistance thermometer Galileo thermometer Infrared thermometer Liquid Crystal Thermometer Medical thermometer (e.g. oral thermometer, rectal thermometer, basal thermometer) Mercury-in-glass thermometer


What liquid mental is used for thermometers?

Mercury is used in thermometers.


What is common in fishes and thermometers?

Mercury is common in both fish and thermometers. Although nowadays they make thermometers without mercury in them.