Scale User Manual

27
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