Ice Bath Thermometer TEST.

I almost forgot... Every time before you use your thermometer, you need test it! If your thermometer will measure temperatures of 32°F or below, you can test it using an ice bath. The advantage of this method is that you don't have to take atmospheric pressure into account. An accurate thermometer will read 32°F in an ice bath at any altitude or atmospheric pressure.

Fill a glass with lots of ice, and then add just enough water to cover the ice. After a couple of minutes, insert the thermometer stem or probe into the middle of the ice bath and stir gently. Don't let the thermometer rest against the ice or you'll get a low reading. An accurate thermometer will read 32°F.