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9-6. EJ-13 Density Determination Kit
Using this option and calculation
program, the balance can determine
the density (specific gravity) of a
sample.
EJ-13 Installation
Push the fixing frame out, and
remove the weighing pan.
Attach the beaker stand to the balance and fit the
pan stand to the pan support of the balance.
Place a beaker filled with water on the beaker stand and place the sample weighing
pan on top of the pan stand.
Density (specific gravity) measurement
The density of a liquid can be changed and there are two ways of setting. One is to
set the water temperature and the other is to set density value directly.
The factory setting for density of a liquid is 25 °C as water temperature (the density
value ρ = 0.99704 (g/cm
3
) is used to calculate).
The density (specific gravity) is calculated by the following formula.
S = X ρ S: Density (specific gravity) of a sample
A: Weight in air
B: Weight in liquid
ρ: Density of liquid (water)
The result is shown with two decimal places.
A
A
-B
Weighing pan
Fixing frame
Sample weighing pan
Beaker
Pan stand
Upper pan to weigh in air
Lower pan to weigh in water
Pan support