Kendamil Milk

We used to use a TT prep machine for it

Yes it has to be 70 or above to kill any bacteria in the formula . i usually boil water and have it in a flask and use the water in the flask throughout the day and re fill it once over .

I half fill bottles with boiled water and fridge them, pre measure scoops into pots, put boiled water into the bottle when needed and add formula, did for all my 3 sons and having 4th baby July and I'll do same for her, I use glass mam bottles

I normally just boil the kettle and do the hot shot method

Tommee tippee prep machine

I've had tommee tippee and despite replacing filters, when I tested the waters, they don't filter correctly at all, they're a waste of space and time and none of them are worth the money compared to an old fashioned kettle method

Yes, always. boil kettle - leave for 30 minutes to cool. Or do the hot shot method with the rapid cool flasks etc.

Can use prep machine but so unreliable and a waste of money in my eyes when there’s quicker ways of prepping a bottle x

You have to use boiled water in less than 30 mins from when it was boiled. Formula powder is not sterile and can host some very nasty bacteria.