The „Ölfleckversuch“ („oil stain experiment“) is very similar in setup but you use a drop of oil instead of detergent. Its volume and the covered area on the wa

The „Ölfleckversuch“ („oil stain experiment“) is very similar in setup but you use a drop of oil instead of detergent. Its volume and the covered area on the water surface are used to estimate molecular sizes: https://de.m.wikipedia.org/wiki/%C3%96lfleckversuch https://de.m.wikipedia.org/wiki/%C3%96lfleckversuch You might want to run this through your favorite translation service since there does not seem to be an English article on it.