50
Balance modes
6.9.5 Liquid density determinations
The density of a liquid can be made using a sinker of known volume. The sinker is weighed in air and then in the
liquid whose density is to be determined, The density,
Q,
can be determined from the two weighings as follows:
Q
=
Density of the liquid
A
=
Weight of the sinker in air
B
=
Weight of the sinker in liquid
V
=
Volume of the sinker
P
=
Buoyancy of the sinker in the liquid (
P = A-B)
START/SAMPLE SETUP MAIN MENU
Q =
A - B
V
DENSITY SETUP
Select liquid density
The balance is prepared in the same manner. Follow the same procedure for
solid density determination except select LIQUID DENSITY under the DENSITY
SETUP display. Press the
Enter
button. The display advances to ENTER
SINKER VOLUME IN CC.
LIBRARY NAME
D2
SOLID DENSITY
<-SELECTED
LIQUID DENSITY
AUTO SAMPLEOFF
AUTO PRINT
OFF
RUN
DENSITY SETUP
ENTER SINKER VOLUME
IN
CC
30.000
Enter sinker volume
Enter the sinker volume in CCs. The display starts with 30 cc. Continue with
the instructions on the displays and select RUN.
0.378
DENSITY - - D3
WEIGH IN AIR: 211.395
WE GH iN LIQ: 200.043 SKRVOL:30.000
GRAMS/CC STABLE
After weighing the sinker in air and then weighing the sinker immersed in
liquid, the balance calculates the density of the liquid and is displayed in
grams/cc. See illustrations below for placement of the sinker. When the
sinker is immersed in the liquid, it
must not
come into contact with the
bottom of the beaker.
Sinker In Air
Sinker In Liquid
Sinker
Sinker
Summary of Contents for Voyager V10640
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