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  • Writer's pictureLittle Steps Agency

Formula Bottle Preparation

Updated: Oct 31, 2020

Are you aware of the correct way to prepare a bottle, for a formula feed, without a Tommee Tippee prep machine? This article explains step by step the process.

This is one of our Little Steps Agency Nanny interview questions, to test a nanny’s knowledge, skills and how they keep their knowledge up to date.

These are the answers I look to hear from Nannies, at an interview stage:

1. Only use sterilised bottles, teats, and lids

2. Read the side of the packet on the formula; formula milks are similar, although they all have different time scales of when they need to be discarded. I find it helpful to use a permanent marker and write the end date across the front of the packet or tin (4/5/6/7/8 weeks from opening depending on the brand).

3. The side of the packet should also inform you about the time scale of which a prepared bottle is to be discarded. This is particularly important to read! Different brands vary depending on the type of bacteria involved; some are 1-hour discard after prep, some are 1.5 hours and some are 2 hours.

4. Once you have established the above, wash your hands and clean the bottle prep surfaces.

5. Boil the kettle with fresh water.

6. Pour the amount of water you require into the bottle and let this cool to around 70 degrees. This allows the good bacteria to stay alive, although allows the bad bacteria to be killed off.

7. Add the necessary levelled scoops of powder to the bottle.

8. Add the teat and the lid.

9. Shake vigorously until the powder has dissolved.

10. Test the bottle on your inner wrist and the right temperature should feel like your body temperature.

11.You can cool down a bottle by running the base under a cool tap, turning the bottle, and avoiding the water touching the teat.

12.Discard the bottle after the allocated time.

You can find more information on the 'Guide to bottle feeding' with Unicef & NHS at:

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*This blog has been written by Little Steps Agency and whilst every effort has been made to ensure that the information included in this article is accurate at the point of release, this should not be relied upon as legal advice

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