[microcolonel]

> When you mix ethanol with water it gets heated up

I don't exactly know how to read this paper into real power-per-volume or temperature differential. Does a crude mixture produce an unsafe or inconvenient amount of heat? Does a mixture of chilled ethanol and water (not really part of this experiment) heat enough for the ethanol (or the water!) to evaporate?

> It is quite hard to achieve precise mixture ratio by hand.

Is there a place where measuring cups or at least five normal cups of similar volume to eachother are not commonly found in households?