Topic · Food Handler Certificate
Calibrating a Meat Thermometer
The usual hard knocks of kitchen work can make an analog instant-read thermometer inaccurate over time. Make sure your trusty thermometer is showing you the right temperature.
When in doubt, follow these easy instructions to calibrate your meat thermometer:

- Bring a small pot of water to a boil.
- Fill a glass with water and plenty of ice.
- Remove the thermometer from its plastic guard and place it in the boiling water.
- If it does not read 212 degrees Fahrenheit (100 degrees Celsius), turn the nut behind the face with needle-nose pliers.
- Only tiny adjustments are required; recheck as needed.
- Place the thermometer in the ice water.
- If it does not read 32 degrees Fahrenheit (0 degrees Celsius), adjust the nut.
- Once it is properly calibrated, the thermometer will read the correct temperatures of both boiling and ice water.
Warning:
- Avoid dropping or hitting your thermometer against hard surfaces.
- Food businesses should calibrate their food thermometer every week and have a calibration log for the Health Department.