Types of Thermometers
|2-5 seconds||1/4" or deeper in the food, as needed|
|10 seconds||at least 1/2" deep in the food|
|Oven cord thermometer||10 seconds||at least 1/2" deep in the food|
Thermometer fork combination
|2-10 seconds||at least 1/4" in the thickest part of food|
|1-2 minutes||2-21/2" deep in the thickest part of the food|
|Instant-read, Bimetal||15-20 seconds||2-21/2" deep in the thickest part of the food||
|Single-use Temperature Indicators||5-10 seconds||approx.1/2" deep (follow manufacturer’s directions)|
|Liquid-filled (glass or ||1-2 minutes||at least 2" deep in the thickest part of the food|
Refrigerator/ Freezer Thermometers:
For safety, it is important to verify the temperature of refrigerators and freezers. Refrigerators should maintain a temperature of 40°F or below. Frozen food will hold its top quality for the longest possible time when the freezer maintains 0°F or below. An appliance thermometer can be kept in the refrigerator and freezer to monitor the temperature. This can be critical in the event of a power outage. When the power goes back on, if the refrigerator is 40°F or below, and the freezer is still colder than 40°F, the food is safe. These bimetallic-coil thermometers are specially designed to provide accuracy at cold temperatures.
An oven thermometer can be left in the oven to verify that the oven is heating to the desired temperatures. These bimetallic-coil thermometers can measure temperatures from 100 to 600°F.
Commonly used in turkeys and roasting chickens since 1965, the "pop-up" style disposable cooking device is constructed from a food grade nylon. The inside contains a stainless steel spring and organic firing material. The organic firing material is specifically designed to dissolve at specific predetermined temperatures. Once the firing material dissolves, the stainless steel spring releases the stem, allowing it to "pop up." This indicates that the food has reached the correct final temperature for safety and doneness. Pop-up style disposable cooking devices are reliable to within 1 to 2°F, however, proper placement is important. Checking with a conventional food thermometer is always recommended as an added precaution to properly gauging both safety and doneness.
Candy/Jelly/Deep Fry Thermometers:
These thermometers will measure temperatures ranging from 100 to 400°F. They are used to measure the extra-high temperatures required of candy and jelly making, as well as frying with hot oil.