In the present study, power input in the totally baffled agitated vessels was compared systematically in connection with several previous studies and adequate power input correlation was found to be: N_P=7.09(n_p)^0.7(b/d)(H/D)^0.18                  n_p^0.7(b/d)<1 N_P=7.09{(n_p)^0.7(b/d)}^0.7(H/D)^0.18            n_p^0.7(b/d)≥1 Power number correlation was also formulated experimentally, which was dependent upon the position of the impeller in the stirred vessels, as follows: N_p(min)=N_p(max)-2.47n_p^1.32(b/d)^1.71          n_p^1.32(b/d)^1.71≤2.87 N_p(min)=N_p(max)-7.06                              n_p^1.32(b/d)^1.71>2.87