How To Sterilize A Thermometer

How To Sterilize A Thermometer At Home?

Are you wondering how to properly sterilize your thermometer at home? It’s crucial to keep your thermometer clean and virus and bacteria-free whether you’re using it to take your own temperature or someone else’s.

Well, thermometers play a very integral role in monitoring temperatures irrespective of the type. Therefore, there is a need to clean it and sterilize regularly. The functionalities of these thermometers allow them to come into direct contact with raw meat and body parts hence it is vital to sterilize it before it is used. This prevents the spread of bacteria.

There is a lot of confusion around how to sterilize a thermometer at home. This is due to the fact that some thermometers cannot be sterilized at home. This blog will look at how to sterilize a thermometer at home and what thermometers can and cannot be sterilized at home. I have provided practical ways on how to sterilize a thermometer. So let’s get into it.

The Steps on How To Sterilize A Thermometer At Home

How To Sterilize A Thermometer At Home

Step 1: Sterilizing A Thermometer with Alcohol

Sterilizing with alcohol is very effective. You will need a clean paper towel, cotton ball, and 70% of rubbing alcohol. Before you begin the process you will have to run water on the thermometer to remove surface germs. Ensure the digital part of the thermometer is kept away from water.

To get started, dip the cotton ball in an alcohol solution and start rubbing the thermometer but taking note of the tip because it requires extensive care. Afterward, you should rinse using running water. Dry off the excess water by shaking the thermometer. You can also air dry. Rubbing alcohol will kill the bacteria and germs effectively. Once you are done with the process you can wipe it using a soft cloth and store it in its case. If you are using a digital thermometer don’t let the water come into contact with the digital parts.

Step 2: Use A Digital Ultrasonic Cleaner to Sterilize A Thermometer

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This is one of the best equipment you can use in sterilizing your thermometer. It is a high-quality ultrasonic cleaner that is equipped with a full LCD. The high power ultrasonic transducer allows it to effectively clean the thermometer. Additionally, it has a large tank for professional cleaning. You can also view the cleaning process using the transparent lid with blue light. It is also moisture-proof to ensure the sterilization is done in the right conditions. You will find this ultrasonic cleaner being used in biology labs, hospitals because of its efficiency.

This digital ultrasonic cleaner uses a cavitation bubble that is induced at a frequency of 40 kHz. It leads to the agitation process which produces forces that makes the contaminant adhere to the glass surface of the thermometer. All germs from recesses and cracks will be removed.

Organic Solvents or surfactants can be used to facilitate the process. The cleaning solution contains the required ingredients that make the ultrasonic cleaning more effective. If you want to learn how to sterilize a thermometer using such equipment you can visit your local or online store and order for a digital ultrasonic cleaner.

Step 3: Sterilizing A Thermometer Using Bleach Wipe

This is yet another effective method where you are required to have a clean paper towel, clean water, cotton pad, bleach wipe, and a microfiber towel.

To get started you need to wipe your thermometers digital display using the microfiber towel. Afterward, use bleach wipe to clean the other parts of the thermometer. Take the wet cotton pad and clean off the bleach. The thermometer can be used immediately after which you will have to repeat this process before storing it. Always ensure the thermometer is cleaned using a clean paper towel or air dried before storage. This is a simple and effective process that you can do from the comfort of your home.

Step 4: Using Hydrogen Peroxide to Sterilize A Thermometer

There is a common question asked by people, can you clean a thermometer with hydrogen peroxide?

The answer is Yes, a thermometer can be cleaned with hydrogen peroxide. As a disinfectant, hydrogen peroxide can help eliminate any germs and viruses that may be on the thermometer’s surface.

Hydrogen peroxide is very effective when sterilizing a thermometer. You will need 3% hydrogen peroxide, soap, water, clean glass, and a clean towel.

You should start by washing the tip of the thermometer with soap and water and rinse it well with clean water. Take a clean glass and pour 3% hydrogen peroxide. Dip the thermometer in the glass and ensure it covers the tip.

Allow it to soak in the hydrogen peroxide solution for approximately 15 minutes then remove the thermometer and place it on a clean towel. Give it some time to air dry before you store it in its case. It is a simple and effective method that can perfectly sterilize your thermometer. You can always repeat this procedure evet other time after using your thermometer.


If you are using a food thermometer. You can sterilize it by first washing the stem using soapy water and rinse it with warm water. If it is a digital thermometer don’t temper with the digital parts.

Afterward, dip the stem in boiling water with a temperature range of 171 Fahrenheit to kill all the bacteria. Alternatively, you can use a food-safe sanitizer by dipping the stem in the solution for at least two minutes. Remove it and rinse with warm water before air-drying your thermometer. I hope now you get how to sterilize a thermometer.

People also ask - FAQs

It is advised that you get a new thermometer if you are unable to sanitize your old one. Using a thermometer that has not been thoroughly cleaned might cause diseases and infections to spread.

Store your thermometer in a tidy, dry area after sanitizing it. A protective case that some thermometers have can assist keep them clean and shield them from harm. Do not keep your thermometer in a bathroom or kitchen or any other space that is likely to experience dampness or hot temperatures.

To sanitize the thermometer, use rubbing alcohol or a disinfectant solution, being careful not to get any liquid within the display or battery compartment.

No, it is not advised to sterilize a thermometer in a dishwasher. The thermometer may become damaged or give off false readings due to the high heat and potent detergents used in dishwashers.

Final Verdict

We hope you enjoyed our blog about how to sterilize a thermometer at home. We know that many people are looking for tips on how to sterilize a thermometer at home. We’ve provided some tips for you below, but this is a very straightforward process that should take no more than 10 minutes of your time.

Don’t use the thermometer before sterilizing because you have all that it takes to ensure it is free from germs and bacteria that can cause infections. We would love to hear your thoughts and experiences with this! If you have any questions or would like to know more, feel free to reach out to us. Thank you for reading, we would love to hear from you!

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