Just water should be fine! Seems unnecessary and expensive way of doing things.
No need for Milton fluid, tap water is fine
Although I live in a hard water area and I use filtered water
I used filtered water
Just 80mls of tap water, and you can use the Tommee tippee bottles to measure it, just fill to the dotted line below 90mls ☺️
Im assuming it's the electric steam steriliser you have. You just need 80mls of water use one of the bottles to measure the amount there's a specific line on them x
I've got the same steriliser and i don't put Milton I just put water in