Activity 1.3 - Use of filters in industry

Learning Aims:
  • To recognize the importance of filters for industry and society
Materials:
Sour milk, gauze or muslin
Suggestions for use:

Pupils should work out that the mixture that is produced this way can be separated by pouring it through gauze, thus separating curd from whey.

Sieves can have important uses within the food industry. Muslin is used in cheese making to separate the liquid whey from the solid curd. It is also used in wine making to remove sediments.
Possible questions:
  • Why are sieves used in food industry?
  • What are important sieves to consider when choosing sieves for the food industry?