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6.4 Procedure and calculations

6.4.1 Determining the density of liquid (oil,
gas condensate or oil product) by means of areometer.

6.4.1.1 For determination of the density pour liquid (oil or oil
product) into a dry high glass cylinder of 500 ml capacity.

6.4.1.2 Immerse the dry areometer into the tested liquid (the scale
of areometer has to correspond the magnitude of liquid density).
As soon as the areometer is stabilized at the certain level mark the
level of the tested liquid in the cylinder by the meniscus of liquid

according to the marks of areometer scale. Take the reading by the
areometer scale from the top to the bottom (to the third decimal digit)
(fig. 6.1). Areometer must not touch to the walls of the measuring

cylinder. Determine the density of each liquid not less than 3 times.
6.4.1.3 Pick up another areometer if the used one does not
correspond to the tested liquid (that is it goes down to the bottom

of cylinder or goes up over the scale).
6.4.1.4 Determine the density of liquid (oil or oil product) by
equation (6.1) in case if the temperature of experiment differs from

20 °С. Use the magnitude of temperature correction for oil and
oil products from table 6.2.
To determine the density of liquid (oil or oil product) under

the temperature t which differs from 20 °С the following equation

is used:
ρ  ρ  а  t (  20 ) , (6.1)
20 t
where ρ is the density of oil (oil product) determined under
t
3
the temperature t, kg/m ; ρ is the density of oil (oil product) under
20

3
the temperature 20° С, kg/m ; а is the temperature correction for oil
kg
and oil products, .
о 3
С m
6.4.1.5 Determine the temperature by thermometer which is
in the areometer or by thermometer additionally immersed into
the liquid.

Repeat the operations (6.4.1.1 – 6.4.1.5) for gas condensate and
oil product (for example kerosene).
6.4.1.6 Put the results of measuring the density of liquids into
table 6.3.

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