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An instrument used to measure the density of milk is :

An instrument used to measure the density of milk is :

  1. glactometer
  2. lactometer
  3. calciometer
  4. polarimeter
Answer: Lactometer

Lactometer


A lactometer is used to check purity of cow's milk. The specific gravity of milk does not give a conclusive indication of its composition since milk contains a variety of substances that are either heavier or lighter than water. Additional tests for fat content are necessary to determine overall composition. The instrument is graduated into a hundred parts. Milk is poured in and allowed to stand until the cream has formed, then the depth of the cream deposit in degrees determines the quality of the milk. If the milk sample is pure, the lactometer floats; if it is adulterated or impure, the lactometer sinks.

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