Tommee Tippee Microwave Steam Sterilizer

White microwave steam steriliser

Microwave Steam Sterilizer


Find some answers to the most frequently asked questions about your Closer to Nature® Microwave Steam Sterilizer.

Do I really need to sterilise my bottles?

Of course not, it’s entirely your choice. The main reason for using a microwave or electric sterilizer is that they are guaranteed to reach the 100 deg C needed to kill off harmful bacteria that can build up in milk. You don’t get that guarantee with a dishwasher.

Which bottles fit in the microwave sterilizer?

That’s simple, all of them!  5 fl oz (150ml) and 9 fl oz (260ml) bottles will fit perfectly. The Microwave Sterilizer can house 4 Closer to Nature and Ultra bottles.

Can I dry baby bottles after sterilization?

Thankfully, you can cross this off your to-do list. Any water left inside the bottles after sterilization is sterile and won’t collect germs so there’s no need to dry. In fact wiping the inside of a bottle after sterilization could even add germs, so it’s best not to.

How do I clean my microwave steam sterilizer?

Funny you should ask as we’ve made a video about that! You can watch it here, or you can just use hot soapy water, rinsing well afterwards.

How do I reassemble my bottle after sterilization?

Just reassemble as normal, but wash your hands thoroughly first, or use a pair of nipple tongs if you have some. The idea is to keep the bottle as clean and sterile as possible:)

How much water should I use in my microwave sterilizer?

We recommend using 7fl oz/ 200ml of water. Pour it straight into the base of the sterilizer.

How should I position bottles in my steriliser?

The aim is to allow steam to get inside and all around every bottle. The best position for this is upside down, ideally at an angle. If you’d like to see this in action check out our video on how to use the microwave steam sterilizer.

Should I have a lot of steam during a cycle?

Not really. If you have way more steam than you’d expect, it could be you’ve just got a few too many items inside. There are marked areas on the trays to show where to put your bottles, and if you’re popping other items like teethers or soothers in, just be sure to space these out evenly.

Should there be water left in the bottom after a cycle?

Yes - that’s pretty common. Just empty it out once you’re finished and you’re ready to start again.

What’s the best way to remove the lid?

You don’t really want a face full of steam, so use the tabs on either side and tilt the lid so the underside is facing away from you. This also means any condensation will drip back into the unit rather than making a mess for you to clear up. The lid can then be used as a sterile surface to make your bottles up on. Handy!

Why do my bottles still have marks on after I sterilize?

The chances are, the marks are milk residue. Sterilizing removes bacteria, but bottles still need to be washed beforehand to remove any bits of milk clinging on inside. Hot soapy water will do the trick - a thorough wash, then rinse and pop them in your sterilizer.



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