Emulsion Emulsion An emulsion is a mixture of two or more liquids that are normally immiscible (unmixable or unblendable). Emulsions are part of a more general class of two-phase systems of matter called colloids. Although the terms "colloid" and "emulsion" are sometimes used interchangeably, "emulsion" should be used when both phases, dispersed and continuous, are liquids. In an emulsion, one liquid (the dispersed phase) is dispersed in the other (the continuous phase). Examples of emulsions include vinaigrettes, homogenized milk, and some cutting fluids for metal working. Graphene and its modified forms are also a good example of recent unconventional surfactants helping
Glass milk bottle stamped or embossed with the name of the dairy. In the United Kingdom, the aluminium foil tops on glass milk bottles are normally coloured: Historically, other colors such as Pink for Ultra-High Treated milk, were also used. Blue was previously used for so termed, 'sterilized' milk. Modern dairies may also use refillable plastic bottles, as well as plastic bottle tops. The colour coding for plastic milk bottle tops can be different from that of glass bottles. In the United Kingdom, the plastic tops on plastic milk bottles are normally coloured: In the United Kingdom, milk sold to the door is