The basic data of any distillation problem are the equilibrium between the liquid and vapour phases of the system subjected to distillation. Hence is of great importance to study the vapour-liquid equilibrium. The set-up consists of distillation still with a heating element. An electrical Dimmers tat is connected to heating element for varying heat input. The vapours form the top of column are condensed in the shell and tube type condenser by circulating cooling water. The condensate is collected in reflux drum and feedback to column as reflux. A tank with pump is provided to circulate cold water to condenser. Flow rates can be regulated through control valve fitted. Instrumentation is provided to measure the temperatures at different points. The present set-up has a facility to interface the system with computer which enables to log the experimental data using computer. The educational software and data-logging package has been developed for unit. The software environment base is of Lab view . This software is compatible to interfacing unit designed by Engineers. This software package provides a comprehensive educational software environment within which the investigations can be performed. This software is capable to tabulate the sample readings according to the requirement of experiment under study and results obtained can be compared. The real time data acquisition can be done by interfacing the set-up with computer using software. Software allows the user to have control on data logging, printing the stored data, preparing spread sheets in Excel etc.

    An ENGLISH instruction manual consisting of experimental procedures, block diagram etc. will be provided along with the Apparatus.
    The whole set-up is well designed and arranged on a rigid structure painted with industrial PU Paint.
Experimentation/Learning Objectives.

•     To determine the vapour Liquid Equilibrium curve for CCl4 and Toluene or any other mixture.
  

Utilities Required.

•     Electricity Supply: Single Phase, 220 V AC, 50 Hz, 5-15 Amp. Combined socket with earth connection. Earth voltage should be less than 5 volts.
  
•     Water Supply.
•     Floor Drain.
•     Refractrometer for Analysis.
  
•     Required Chemicals.
•     Computer System: i-3 processor with DVD Drive, Windows 7/8, MS-Office pre-loaded. One USB slot required in PC for Data Acquisition Card.