LPT 311: Milk and Milk Products Technology (1+1)

SAMPLING EQUIPMENTS

Plunger

• It is an equipment used to mix the milk or cream to make it uniform in composition throughout the container in which milk or cream is kept.
• It is made up of metal either stainless steel or any metal, which will not react with milk. It consists of a disc with several perforations. A long handle is fixed to it at the centre with which it can be worked.

Dipper

• It is used to take the sample from the container. It consists of a small cup fitted to one end of a long handle. It’s capacity is usually 50 ml.

Tube sampler

• Various types of tube sampler are in use. The advantages of samplers are
  • Aliquot portion are secured in proportion to the quantity of milk to be sampled.
  • A fairly representative sample regardless of how long the milk has stood / stored before sampling can be obtained using the sampler.
  • By this method a column of milk, which represents the milk from the top to bottom, is removed from the container.

McKay equity sampler or Mckay sampler

• This is composed of two parts. One is fitted in to the other.
• The principle here is the same as the tube sampler. With this sampler, representative proportion to the quantity contained in the container can be secured.