Straining milk

"Sediment in milk indicates carelessness in the production of handling. Sediment contaminates milk and makes it less salable. Most of the sediment in milk comes from the bodies of cows and consist of hairs, manure, bedding, etc. Straining removes only the course particles of dirt and remove neither the bacteria or the fine dirt. Straining improves the commercial quality of milk, but does not appreciably improve its healthfulness. The best system is to prevent, so far as possible, the entrance of dirt into milk. This can be done best by having clean cows in clean stables, milked with clean hands, into clean, small-top pails. Filter cloth should be changed whenever they become soiled. They should be thoroughly washed and sterilized after each using. Efficient sterilization is accomplished by boiling or exposure to steam for at least five minutes."--Page [2].