油膜實驗器主要供學生做用“油膜法”估測油酸分子大小的實驗。
J2280 Experimental Film
It is mainly used for students to do the "film" to estimate the size of oleic acid molecule experiment.

J2280 Experimental Film
It is mainly used for students to do the "film" to estimate the size of oleic acid molecule experiment.
