Vapour Pressure Analyser
The Vapour Pressure Analyzer or VPA measures the vapor pressures of solids, liquids and oils using the Knudsen effusion method.
The vapour pressure is an important material physical property that defines the amount of vapor phase material that exists in equilibrium with the original material. All materials enter the vapour phase by sublimation (solid – gas) or evaporation (liquid – gas).
The vapor pressure of a material at thermodynamic equilibrium is a fundamental property of the material and is only a function of temperature.
- Experimental temperature 20°C - 85°C, sample mass up to 1 g
- Sample pre-heater up to 400°C
- Rotary pump Vacuum pressure 1 x10-3Torr.
- Turbomolecular pump in combination with rotary pump 10-7Torr.