Gas Absorption Column Apparatus

Column working length is 1.4m x 80mm diameter, split into two sections.
An apparatus for teaching the principles of the absorption of gas into liquid, using a packed column.
Water flow can be used in either recycle or one-pass operation. 
Column supplied with 10mm x 10mm Raschig rings as packing material, total volume 7 liters. 
Two electronic pressure sensors measure the pressure drop across each half of the column. 
An electronically controlled submersible pump provides a liquid flow of 1-10 l/min. 
60l feed tank. 
Electronic measurement of CO2 concentration in the air streams, measurements can be taken at the column inlet and outlet. 
Sensor values displayed on an alpha-numeric display on the control console.  
Centrifugal fan provides air flow up to 160 l/min. 
Two electronic temperature sensors measure the air and liquid temperatures.