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9. All of the following are true regarding the use of a thermometer in food service EXCEPT:
Use a shatter-proof thermometer to check the internal temperatures of food, especially meat, poultry, and eggs.
Appliance thermometers are used to check the internal temperatures of the refrigerator, freezer, and oven.
All thermometers should be calibrated per organizational policy, following the temperature guidelines for each type of food and each appliance.
Using food thermometers is optional.
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