160 PRS/PRJ/ARS/ARJ-BA-def-0622
13.2 Notes on density determination
Using the “Density” working program, you can determine the density of solids and liquids
(with accessories for density determination).
For this, you can choose from various methods of weighing.
NOTE
Determination of density using a density set is described in the following chapters 13.1.6 –
13.1.9. Various models are available for the PRx/ARx models.
Balance model Density set model
ARJ../ ARS.. AR-A01
PRJ../PRS.. PR-A02
13.2.1 Density determination “Solid on bottom mode”
The reference liquid (water) which has been temperature-adjusted, is placed on the
weighing pan and tared.
Then the solid is placed into the liquid and weighed. Then the solid is suspended in such
a way that it is still completely in the water, but no longer touches the bottom. It is
weighed again.
The balance can determine the density of the solid from the weights taken.
13.2.2 Density determination “Solid in air mode”
With this weighing method, the solid is weighed through suspended weighing (see
Chapter 6.11 “Suspended weighing”).
Then the solid is submersed in the reference liquid (water) which has been temperature-
adjusted, and the solid does not touch the weighing pan floor, but is nevertheless still
completely in the water. It is now weighed again.
The balance can determine the density of the solid from the weights taken.
13.2.3 Density determination “Liquid mode”
With this weighing method you can determine the density of a liquid.
The procedure is the same as for density determination in “solid in air” mode. A piece of
solid glass with a volume of 10 cm
3
or 100 cm
3
is used as a solid.
13.2.4 Density determination “Porous solid mode”
With this weighing method you can determine the density of a porous solid.
To be able to carry out such measurements, you will need the density determination set.
The procedure for measuring density is described in the operating instructions included
with the set.
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