Abstract
A method is described by which powders may be compared with respect to their potential to liberate airborne dust during certain manufacturing processes. Thus it is possible to select quickly from a range of otherwise suitable powders the powder with the lowest dust yield, which reduces the precautions required to prevent exposure of factory personnel to the dust. A weighed quantity of the powder is poured through a standard height in a cabinet. Airborne dust, irrespective of particle size (“total” dust), is collected on a weighed filter in an open filter holder and, in a separate test, after passage through a horizontal elutriator which separates respirable dust capable of penetrating to and being deposited in the human lung. The weights of respirable and “total” dust are expressed in relation to the weight of powder tested.
Published Version
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