The emulsion test

• The emulsion test is used to test for lipids
• Firstly, 2ml of sample is added to 5ml of ethanol. Subsequently, the contents are mixed thoroughly by shaking to ensure that the lipids dissolved.
• Upon addition of 5ml of water and mixing, the solution turns

  cloudy indicating the presence of lipid due to the formation of an emulsion where the light is refracted as it passes from droplets of oil to droplets of water.