ISO 6770:1982 Preview
Instant tea -- Determination of free-flow and compacted bulk densities
This standard was last reviewed and confirmed in 2015. Therefore this version remains current.
The method for the determination of the free-flow bulk density consists in pouring a sample from a specified funnel into a specified receptacle of known volume, and weighing the contents of the receptacle. The determination of the compacted bulk density consists in determining of the volume of a given mass of the product after a fixed number of taps (usually 100) in a jogging volumeter.
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