Apparatus for determining the critical point


This very accurate apparatus is used to study the compression and the liquefaction of gas, to determine the critic point, and to detect isothermal lines on diagram p-V (Clapeyron diagram).

Training program

Liquid and gaseous state:

  • Dynamic state during compression and decompression phase
  • Critical opalescence
  • Determination of transition point at different temperatures

Quantitative measurements:

  • Explanation of critical point and of critical temperature
  • Detection of isothermal lines in p-V diagram (Clapeyron diagram)
  • Detection of isothermal lines in pV-p diagram (Amegat diagram)
  • Pressure waves of saturated steam
  • Deviations of real gas from ideal gas state

Technical specifications
Supply with