How to Sterilize Breast Pump


Just like baby bottles, breast pumps should be sterilized as well. This is crucial to protect your child from harmful microorganisms. It goes without saying that you should know how to sterilize breast pump.

Breast pumps may be sterilized with either microwave or electric sterilizers. Both types of sterilizers are actually designed for baby bottles in the first place.

However, baby bottle sterilizers are also ideal for breast pumps. After all, baby bottles and breast pumps are usually made of the same material.

Now that we have an idea about the two types of breast pump sterilizers, learn more about them below:

Using microwave sterilizers.

Even though microwave sterilizers can thoroughly clean your breast pump, you should know that they’re only ideal for single-person use. Breast pumps being shared with other moms are already too contaminated for a microwave sterilizer to handle.

If you’d prefer the microwave method, check out the steps below:

  1. Scrub the interior of your microwave oven with a mild detergent. Food stains and grease can still contaminate your breast pump even during the process.
  2. Wash your breast pump and its accessories thoroughly with mild soap and water.
  3. Pour water into the microwave sterilizer. Follow the amount stated in the user’s manual. Also, check if the manual recommends distilled water.
  4. Place your breast shield upside down inside the microwave sterilizer. This ensures that the steam will focus on the inner side of the shield – the one that actually touches your skin.
  5. Load other accessories in the microwave sterilizer.
  6. Tightly close the sterilizer’s lid.
  7. Put the sterilizer inside the microwave. Follow the temperature and duration recommended by the user’s manual.
  8. Leave the sterilizer to cool down after the microwave process.
  9. Remove the contents from the sterilizer. You may actually keep them inside for 24 hours as long as the sterilizer remains closed.

Using electric sterilizers.

Without a doubt, electric sterilizers are more powerful. Learn how to use them with the following steps:

  1. Wash your breast pump and its accessories with mild soap and warm water.
  2. Rinse everything thoroughly.
  3. Pour water into the electric sterilizer. Follow the correct amount and method from the user’s manual. In addition, check if the manual recommends a certain kind of water.
  4. Load the breast pump plus accessories inside the electric sterilizer. Again, place the breast shield upside down.
  5. Tightly close the sterilizer’s cover.
  6. Activate the sterilizer. Follow the recommended duration from the user’s manual.
  7. Wait for the cooling cycle to finish.
  8. Remove the contents from the sterilizer.
  9. Dry the contents with a clean dish towel. You may also air-dry them if you want. Or, simply leave them inside the sterilizer for 24 hours.


Now that you know how to sterilize breast pump, start deciding whether you’re going to use the microwave method or the electric sterilizer. Whichever method you use, always remember to wash your breast pump before sterilizing it.