Making formula and hot water

[tickcross]

I didn't realise but you need to use hot water to kill the germs in the formula.

I was wondering what temp the water has to be?

70 degrees centigrade.

It’s always on the instructions.

The actual temp isn't

@tickcross they always used to say something like boil fresh water, leave for 30 mins so it’s xx degrees C (normally 70 degrees C) - not sure if that’s changed but if you follow the instructions for making it’ll be fine. Just don’t fall for all the people saying “it’s the water that needs sterilisation so boil it and keep cooled boiled water to add to the powder” - that’s not correct like you say the germs need to be killed!

So 79 degrees??

70*

Yep 70 degrees, hot enough to kill any bacteria in the formula but not too hot to degrade the nutrition in the formula.

The temp is on stage one of the instructions you've posted. You can read it clearly.

It’s 70 degrees which is one litre of water boiled and cooled for no more than 30 mins. If you boil 500mls and cool it for 30 mins it will be too cold.

I'm sure the 30 minutes advice is wrong though, because as soon as you switch the kettle off the bubbles subside quickly. Bubbles begin forming in water at about 70 degrees. I don't think I can see any bubbles in my kettle three minutes after switching it off. There's no way the water could still be at 70 after 30 minutes, and then you pour it into a bottle so it's going to cool down more! Have any scientists here actually tested the instructions with a thermometer?

Don't be rude.

Since when do I have a thermometer to measure the temperature and pretty sure after 10 mins the water is cooled... so why do they put 30 mins:

So they really should write "cool water to 70 degrees".

I was using boiling water before.

.....because I used one of those Nubu flasks....my bad

I used boiling. Then I felt able to put the bottles in the fridge for use through the night. Baby got used to cool milk. All was well.

I'm not being rude. You said that they don't say the actual temp despite the actual temp recommended being on the instructions you posted.

It's odd to do that.

It says exactly what temp (and how long to leave the boiled water to obtain said temp) on step 1. Just follow the instructions and it'll be fine.

(and if you're using a Rapid Cool flask then follow the instructions for that, they may be slightly different)

They have written this on the instructions.

No one is being rude OP. You’ve asked for help and people are literally answering your question. And it’s all right there on the instructions 🤷‍♀️

I have the ninja kettle which very helpfully can be set to the temperature you want to boil to. They're pretty expensive but there much be cheaper versions?

DC are now 6 and 9 but I used boiling water (ie just boiled in kettle), prepared the bottles, and then put in fridge. Warmed up when needed. That worked fine.

You can make cool fine.
Thats a uk box of Aptimal
milk. If you look on say Germany aptimal Milk ie the exact same formula, it says drinking temp of 38 degrees so it’s drinkable straight away. German babies aren’t dropping down ill

German Aptimal instruction

Basically says: Add 2/3 warm water around 40 degrees. Add all formula. Mix. Top up the final 1/3 water. Make sure it’s no hotter than 37 degrees when baby drinks

Nothing about 70+ degrees. And it’s the exact same formula as uk Aptimal

Yes you are being rude.

The instructions state "leave the water to cool for 30 minutes and no more to reach the desired temperature of 70 degrees".

So they are telling you to boil the kettle and leave it for 30 minutes. It's not leave it for cool to reach the desired temperature of 70 degrees and this must be reached within 30 minutes or the water must be discarded.

The instructions state you need a litre of water and can't put this in the bottle until 30 minutes on the dot because then it will be 70 degrees.

And what happens to water after 30 minutes.

The instructions should read - boil the kettle and wait for the water to reach 70 degrees and decant to the sterilised bottle.

And yes this now brings "hot shots" into question and the volume need.

Honestly, in the nicest possible way OP, don’t worry. Just follow the instructions and it’ll be fine. You don’t need a thermometer, just follow the steps/ set a 30 mins timer.

Whoever mentioned scientists - yes, of course this has all been tested rigorously. There are a lot of rules and regulations around formula. They can’t just plop out formula instructions without testing it! Making with boiled water that’s been cooled to fridge temperature is a massive no-no. I used to work for Aptamil, there is more red tape than you can imagine with these products.

You're complicating it I think. The instructions mean boil the kettle then once boiled, leave for 30 mins to cool down to 70'? I don't know why you're making it more difficult than it is. If you're unsure, buy a food thermometer and you can test the water is 70' before you make up the bottles.