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Scientists and chemical engineers in industry, research and teaching still measure phase equilibria despite the significant improvement in theoretical evaluations.
For that reason, the FISCHER® - phase equilibrium apparatus is part of the standard equipment in chemical engineering laboratories.
The vapour-liquid equilibrium of binary and multi-component mixtures constitute an essential basis for the determination of the theoretical plates necessary for the evaluation of separation processes. Although VLE-data are known from literature, there is still an increasing tendency towards re-deter-mining equilibrium data by experiments, because the thermodynamic para-meters like pressure, temperature and concentrations are different or inadequate.
Especially the theoretically additional evaluation of the temperature and pressure dependence of phase equilibrium is insufficient very often in daily practice, thus the experimental determination of VLE-data is increasingly requested in the overpressure range, too.
i-Fischer Engineering GmbH modified the VLE-equipment, since decades sold under the world-known FISCHER®-brand, suitable for the overpressure range (up to 50 bar).
The VLE-equipment is designed for a charge of 50 ml (dynamic mode) and can be operated under vacuum (1...1,013 mbar), atm-condition and overpressure (1...50 bar) as well as temperature up to 180°C.