Vapor Pressure Measurement
Vapor pressure is a an important characteristic property for the technical application of many substances. For the registration of chemicals according to the European REACH regulation the vapor pressure must also be known.
A well-established method to measure vapor pressure is the effusion method using a Knudsen cell. This method is based on the gravimetric measurement of the weight loss by evaporation through a small orifice into vacuum. With the new FluiPV Rubotherm offers a commercially available instrument with Magnetic Suspension Balance for vapor pressure determinations. The weight loss of a Knudsen cell is measured accurately under optimized temperature control conditions in high vacuum.
With this new instrument the vapor pressure of ionic liquids - in many publications still wrongly claimed to be not existing – could be measured.
Please refer to our literature for more for details about the vapor pressure measurement with magnetic suspension balances.
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