Prep machine - 0.5-1oz more?

[esunny]

Hello,

started using our prep machine today on 4oz and when finished it’s making 4.5-5oz? Does anybody know why this is? When we make with the nuby rapid cool it makes 4oz perfectly?

thanks

I am having the same issue, it’s always a little above which then throws off balance with powder… can’t quite figure it out

Glad I’m not the only one! I’ve been told to cancel it as soon as the bottle hits 4oz! I feel like it doesn’t include the hot shot maybe?

@esunnyso I read somewhere that it’s because the oz doesn’t include the formula powder. Obviously once you add the powder in, it increases the volume but the ratio of water and powder is still correct if that makes sense.

It’s 4oz of water to x number of scoops. If you add something into 4oz of water then basic science is that the overall volume / amount will increase. I don’t quite understand why you are confused. Don’t hit stop as if not you won’t get enough water. The same if you made it with boiled water from the kettle - you would fill it to 4oz and then add formula and shake.

@KittyPupno need to be rude, sleep deprivation can make new moms easily confused and anxious 😉 it does make sense but given many people make a bottle by first putting powder and then adding water to the required amount line, one can easily understand the confusion.

All powder formula bottles are like this. The volume is made up of 4oz of water, plus the volume of the power and the volume of air bubbles.

If you were using the kettle method you would measure 4oz of water and then add the powder.

But that is a no no and potentially very dangerous.

It honestly was not meant in a rude way at all. Instructions are on the box. Formula powder is quite thick and you have to add so much to the water that it’s only natural that it will end up being more than 4oz. It’s not the same as dissolving say sugar or salt in water.

Just to add also, I don’t know of anyone who adds the formula first. It’s always water first and then formula in every instruction.

You can always check the water amount coming out of the machine by making a bottle without formula if you are concerned.

@KittyPup I would say I know absolutely no one who makes it that way! It’s funny how these things vary so much.

I used to find this too. I found out a new method which I prefer to the machine.
2 flasks.
1 with boiling hot water, the other with cooled water. You can then make your perfect prep and use it in the middle of the night or out and about.