Fig. 1. Experimental setup. 1. conductivity electrode, 2. conductometer, 3. sparger,
4. rotary torque transducer, 5. amplifier, 6. data collector, 7. computer, 8. stirred
tank, 9. injector. A (Probe A): 0.192 m from bottom and 0.115 m from shaft axis;
B (Probe B): 0.03 m from bottom and 0.115 m from shaft axis; P1 (injector 1): at
the liquid surface and 0.115 m from shaft axis; P2 (injector 2): 0.08 m from
bottom and 0.115 m from shaft axis; P3 (injector 3): 0.03 m from bottom and
0.115 m from shaft axis.