The laboratory performs precision calibrations of volume and density standards using hydrostatic weighing.

The methods used allow state-of-the-art uncertainties to be obtained.
The following can be used as a reference standard:

• the density of distilled water (best relative expanded uncertainty 5×10^-6)
• the density standard consisting of a 1 kg silicon sphere (best relative expanded uncertainty 2×10^-7)

Calibrations are also carried out on densimeters (aerometers) used to determine dissolved compounds' absolute density or concentration (alcohol content, salinity, etc.)
Calibration is performed by hydrostatic weighing using the Cuckow method with a range from 500 kg/m³ to 2000 kg/m³.