Graduated Bicapillary Pycnometer

The liquids sample is drawn into the graduated pycnometer arms, and after it has reached equilibrium at the test temperature, the liquid levels are noted and the pycnometer weighed.

Capillary-Stoppered Pycnometer

The mass of equal volumes of a sample and of water are compared. Equal volumes are ensured by the pycnometer beeing filled so as to overflow when placed in a bath at the test temperature until equilibrium is reached.

Pycnometer

to be composed of:

- Lipkin-Pycnometer (5 ml)
- Gay-Lussac-Pycnometer (25 ml)
- Hubbard-Pycnometer (24 or 25 ml)