Operating instructions

The “Density” application
125
10.6 Formulae used to calculate density
The “Density” application is based on the formulae listed below.
10.6.1 Formulae for determining the density of solid bodies
With compensation for air density Without compensation for air density
ρ = Density of the sample
A = Weight of the sample in air
B = Weight of the sample in the auxiliary liquid
V = Volume of the sample
ρ
0
= Density of the auxiliary liquid
ρ
L
= Density of air (0.0012 g/cm³)
α = Weight correction factor (0.99985) to take the atmospheric buoyancy of the adjustment weight into account
10.6.2 Formulae for determining the density of liquids and pastes
With compensation for air density Without compensation for air density
Density of the liquid or paste
P = Weight of the displaced liquid or paste
V
0
= Volume of the sinker or gamma sphere
ρ
L
= Density of air (0.0012g/cm³)
α = Weight correction factor (0.99985) to take the atmospheric buoyancy of the adjustment weight into account
ρ = (ρ
0
– ρ
L
) + ρ
L
A
A – B
V = α
A – B
ρ
0
– ρ
L
V =
A – B
ρ
0
ρ =
A• ρ
0
A – B
ρ = + ρ
L
α•P
V
0
ρ =
P
V
0