Pulbri osakeste tihedust, millele ei saa kohaldada tavalist kaalumismeetodit, saab mõõta vedelike ja pulbrite tihedusmõõturiga, mille juures pulber lisatakse tihedusmõõturisse, mis seejärel kaalutakse, andes pulbriproovi massi, ning tihedusmõõtur täidetakse seejärel teadaoleva tihedusega vedelikuga, milles pulber on täielikult lahustumatu, ja seejärel saab mõõta suurenenud vedeliku massi ja seega ka pulbri suhtelist tihedust.
The particle density of a powder, to which the usual method of weighing cannot be applied, can be determined with a density meter for liquids and powder, and the powder is added to the pycnometer, which is then weighed, giving the weight of the powder sample, and the pycnometer is then filled with a liquid of known density, in which the powder is completely insoluble, and the weight of the displaced liquid can then be determined, and hence the relative density of the powder.
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