Mixing time measurements have been carried out in a 0.2m I.D. short bubble column (Hc/D less than or equal to 5) with different spargers and for-different clear liquid height to, diameter (H-C/D) ratios. Superficial gas velocity has been varied in the range of 0.01 m/s to 0.1 m/s. Effect of bulk fluid viscosity, on the mixing time hat also been studied. The circulation cell model, with two fitted parameters; viz. number of circulation cells, S and the inter-cell exchange velocity, V-e, has been used to predict and explain the variation in mixing time and the flow pattern in the short bubble column for different types of spargers.