How to Sterilize Ameda Breast Pump Parts


If you are sterilizing your Ameda Breast Pump for the first time, you might be asking yourself where to start. The Ameda Purely Yours has quite a few attachments. Find out how best to sterilize your Ameda pump parts and which parts need cleaning and which ones can do without.

Why Sterilize Breast Pump Parts?

Why is it important to sterilize breast pump parts? They come sealed in most cases and look like they should be ready to use but unfortunately, they are not okay to use out fo the package. The long and short answer as to why is that they are not sterile and you would not want to introduce any bacteria to your milk inadvertently while pumping.

So you need to sterilize before using the parts for the first time.

Now after you initially sterilize the parts, it is not necessary to sterilize them after each use. You only need to wash with warm water and soap. It is best to sterilize every so often. The frequency will depend on how often you pump.

When I pumped every day while working, for example, I liked to sterilize my pump parts every week to two weeks.

(Related: Read These Tips for Pumping at Work!)

How to Sterilize Ameda Brest Pump Parts

Because the Ameda Purely Yours is a closed system pump, there are a few parts that you do not need to sterilize or wash since they are never exposed to breast milk.


Here is a list of parts you NEED to sterilize and wash:

  • Breast Flange
  • Collection Bottles
  • Locking Ring
  • Locking Disk
  • Diaphragm
  • Valve

You DO NOT need to Sterilize or wash:

  • Tubing (or tubing adapter which is connected to the end of the tubing)
  • Adapter Cap

(Related: Need a Pumping Schedule? Use ours!)

Step 1 – Boil a Pot of Water

Get a large pot, fill it with water, and boil. Simple, right?


Step 2 – Take the Parts Apart

Make sure you take apart all the parts. The diaphragms and valves, for example, are connected to the flanges. All the parts should be separated before boiling them.



Step 3 – Place All Parts into the Pot of Boiling Water

Carefully place the flanges, diaphragms, valves, locking rings, locking disks, and collection bottles into the pot of boiling water.


Step 4 – Boil for 20 Minutes


Step 5 – Remove Parts from the Pot

I find it easiest to use tongs when pulling the parts out of the boiling water. That way you can drain any water from the parts (like the collection bottles) without burning yourself.


Step 6 – Let Parts Air Dry on Clean Surface

A good old paper towel will work just fine for this or a fancy drying rack for baby items works too.


While sterilizing your pump parts can be inconvenient, it really doesn’t take that long. Popping the parts in the boiling water and walking away for 20 minutes is easy peasy. 

If you are pregnant and wanting to be prepared with a clean and ready to go pump for the birth of your baby, then I would suggest sterilizing a week or two before your due date. Store the parts in your pump bag until you need to use them. 


As always, if you have any questions or comments, drop them below. I would love to hear from you!

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