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Summary
DescriptionLouche effect grapefruit-cello.webm
English: Water is poured into a solution of 75.5% ethanol and essential oils from grapefruit rind. As the water lowers the concentration of ethanol, the oils come out of solution and form a microemulsion; this is called the "ouzo effect" or "louche effect".
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This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Video of Category:Ouzo effect. You can see its nomination here.