How To Sterilize A Thermometer

How To Sterilize A Thermometer During COVID-19?

How to sterilize a thermometer is one of the most asked questions all over the internet. 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. Here is a step by step guide that will help you to sterilize thermometer effectively.

Sterilization is an effective way to kill germs and bacteria that can lead to infections. 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

Step 1: Sterilizing with Alcohol

Sterilizing with alcohol is very effective. You will need a clean paper towel, cotton ball, and 60% 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

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.

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Step 3: Sterilizing 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

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.

Final Verdict

If you have been looking at how to sterilize a thermometer then this guide will be very helpful. 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.

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