Place thermometer probe in the center of the rapidly boiling water, not touching the thermometer to the bottom or sides of pan. Make sure to protect your hands from steam. Wait until temperature indicator on the thermometer is stabilized. The temperature should read 212°F (100°C).
Can you put a thermometer in boiling water?
Boiling Water Method
In a deep pot, bring distilled water to a rolling boil. Dip the thermometer stem two inches into the boiling water without touching the bottom or sides of the pot. Wait for 30 seconds and the thermometer should read 212°F.
What happens if you put the thermometer in boiling water?
Item AM042005: When a glass thermometer is placed in hot water, the level of liquid rises because the molecules get farther apart. A glass thermometer has a colored liquid inside it. … Heat causes the molecules of the liquid to get farther apart. The molecules of the liquid break down into atoms and take up more space.
Why is it not advisable to sterilize a thermometer in boiling water?
The higher temperature that we can measure by a clinical thermometer is approximately 42°C. … Now,if we put clinical thermometer in boiling water, then the internal mercury of the thermometer will try to expand more than the highest marking and this expansion will create an excessive force inside the thermometer.
How do you sterilize a digital thermometer at home?
How to Clean a Digital Thermometer
- Soak a cotton ball or pad in rubbing alcohol ($4, Walmart) and use it to thoroughly coat the entire device. …
- Allow the alcohol to air-dry on the thermometer to effectively kill germs.
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Are digital thermometers accurate?
A digital thermometer is the most accurate and quickest way to take a temperature. Digital thermometers are available in most drug stores and supermarket pharmacies.
Can digital thermometer be washed?
Digital Thermometers
“If you’re using a digital thermometer, it’s best to wipe the thermometer down with rubbing alcohol or a bleach wipe and let the thermometer dry,” says Dr. … Rinse the thermometer in cool running water to eliminate traces of alcohol. Avoid wetting the digital components, such as the display.
Why do thermometers give different readings?
Differences between measurements can also result from the following factors: … Put the device on the table in the room where the measurement is taking place and let it cool down first. Your room temperature is too low or too high. Use your thermometer at temperatures between 10.0 °C/ 50.0 °F and 40.0 °C/ 104.0 °F.
Why do thermometers use alcohol instead of water?
Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. Pure ethanol freezes at -115 degrees C, while mercury freezes at -38 degrees C. Thermometers rely upon thermal expansion of the liquid in a bulb at the base of a thin glass tube.
What happens inside a thermometer when the temperature goes up?
As the temperature around the thermometer’s bulb heats up, the liquid rises in the glass tube. The glass tube is mounted on a backboard that is marked in units called degrees. When it is hot, the liquid inside the thermometer will expand and rise in the tube. The opposite happens when it is cold.
How do you disinfect a glass thermometer?
For glass thermometers, wash it with soap and cool water, then rinse and dry. Or you can it wipe with a cloth soaked in alcohol. Allow it to air dry.
Which thermometer should never be washed with dirty water?
Answer. Because you will break it. The clinical thermometer has been made to measure temperature around our physiological temperature or 95 to 105F (35 to 40C. Using it in boiling water would break it, going way past the max temperature for this thermometer.
How do you disinfect an electronic thermometer?
Clean your thermometer before and after you use it with either rubbing alcohol or lukewarm soapy water, then rinse with cool water. Wipe it dry with a clean cloth or let it air dry.
Can we clean thermometer with hand sanitizer?
5. Wash the thermometer with lukewarm water and soap. If you have rubbing alcohol clean the thermometer with it and a soft cloth. … Wash your hands with soap and water, or use a hand sanitizer.
How do you clean a digital thermometer without alcohol?
- Wash the thermometer in a bowl of cool, soapy water.
- Rinse thoroughly in clean running water. Shake off the excess water, but it’s not necessary to dry before using.
- Use the thermometer immediately and then repeat the process.
- Let the thermometer air dry on a clean paper towel before putting it away.
Can you use a Ziploc bag as a thermometer cover?
No. It might slow the response rate by providing a tiny amount of insulation, but heat energy is pervasive. … Even trapped air in the baggie will only slow the response rate a little more than an evacuated baggie would.