This technique is particularly useful in powder flowability studies
and also in determining the amount of settlement during transit
in order to optimize pack sizes e.g. washing powders. Tapped
density is achieved by mechanically tapping a measuring cylinder
(i.e. raising the cylinder and allowing it to drop the specified
distance of 3 +/- 0.2 mm under its own weight) containing the
sample under test.
Two versions of the tester (JV 1000 and JV 2000) are available
dependent on the number of test stations required (one or two).
Both versions utilize 250mL measuring cylinders as standard;
however, 100 mL cylinders (and smaller) together with appropriate
platforms are also available if required.
Both of the instruments are equipped with membrane keypads for
setting the number of strokes or time and an LCD screen to set the
appropriate parameters and monitor the progress of the test. |