Manufacturer : Advantek Instruments 
The cell is made of Quartz, Internal size : 50 mm x 50 mm x 50 mm , with three threaded electrodes       ( One counter electrode of 0.5 mm dia platinum wire , one  Platinum plate holder, one Ag/AgCl Reference holder ) , one threade stopper with Septum to take out gas from inside the cell, two threaded stoppers with  inlet / outlet pipe. 
 
Cell volume can be made as per scientist's requirement