Making bottles - the level always rises

[harleysmammy]

Hi, this may be the stupidest post on here but I needed to ask.

When I make a bottle - I put 7 oz water and 7 scoops as it says on the box; 1 scoop = 1oz.
So great, that's what everyone else does too.

My partner however, has always had this thing that if you put 7oz of water and 7oz of formula, it was always rise above the 7 oz mark as it's "simple physics". I ALWAYS get my hair of because I ask him to make 7 oz and it comes back 8 oz and we always argue over it as he is adamant he's only put 7 oz in and I'm adamant he's making bottles wrong, to the point where I subconsciously make all the bottles now.

Last night I stood there and watched him make a bottle and I checked the level after he had poured the water. It was 7. He then put 7 scoops (I counted too) and when I checked again, the level had actually gone up to just under 8 oz.

Does it normally go up when you put the formula in? Do I need to say sorry? thanks x

yes, the level will usually rise up.

Yes that's what happens

Yes.

Doesn't this also happen when you make them?

I've never really paid attention when I make it, I noticed yesterday it goes up maybe half an ounce but I've never really noticed. Thank you everyone:)

Yes it goes up due to the formula being added. Perfectly fine.

He's right, it's like when you get in the bath and the water level rises

Yes it's normal.

Of course it does, you're adding more stuff to the bottle...

Well yes. If you have 7oz of water and you're adding formula to it, of course the level will rise. As there will be more stuff in the bottle.

Don't worry, my husband and I also stressed about this in the formula days...i used to explain to him that the water would rise, and he couldn't get his head around what I was saying....that's sleep deprivation for you!

Of course it rises. It's the displacement value. I'd be amazed if it didn't happen with the bottles you make...