Sartorius YDK01 Betriebsanleitung Seite 20

Determining the Density of Liquids
Preparation
– Center the small-diameter beaker
(55 mm d) on the metal platform
– Attach the thermometer to the rim of
the beaker using the retainer clip
Measuring Procedure
– Suspend the disk with the glass
plummet (hanging on one wire) from
the frame
– Tare the balance
– Fill the beaker with the liquid to
be tested so that the liquid is
10 mm above the glass plummet
Determining the Buoyancy
G = W (a) – W (fl)
The negative weight displayed by the
balance corresponds to the buoyancy
acting on the glass plummet in the
liquid.
– Record the buoyancy displayed
with a negative sign
– Read off the temperature
and record it
20
Calculating the Density
– Calculate the density using the
following formula:
G
ρ (fl) =
V
3
G in g; V in cm
The glass plummet included in the
specific gravity/density determination
kit has a volume of 10 cm
It is easy to obtain the current density
of the liquid (in g/cm
need a calculator. Mentally shift the
decimal point in the balance display
one place to the left.
3
.
3
); you will not