A&D Ej Series Compact Balance EJ-2000 - Manual (Page 29)

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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