«Everybody advise easily, but only few take the responsibility for their advice»
- Publius Cornelius Tacitus (Roman historian and politician)
Pycnometers acc. to Gay Lussac, unadjusted
Pycnometers acc. to Gay Lussac, adjusted
Pycnometers acc. to Gay Lussac, adjusted, with thermometer and side tube
Pycnometer heads with/without bottle
Water jet pump acc.to Friedrichs-Antlinger
Water jet pump
Water jet pump acc. to Wetzel, without non-return valve
Non-return valve