- violinistLv 51 decade agoFavorite Answer
add equal volume of oil and water into each of several measuring cylinder
add same volume of detergents of different brands into each respectively
shake thoroughly and let them stand for minutes until emulsified layer is formed
if emulsification is not effective, thin layer of water and oil are separated later
compare the volume of miscible layer.
error: random visual error due to the fact that boundary between layers is not sharp
random error due to the incomplete emulsificationSource(s): myself