Paddlewheels B also increased oxygen transfer rate with speed, but efficiency did
not display a significant trend. Perhaps this particular model reduced the backsplash
effect when operating above the critical speed. Perhaps the elastic behaviour
of paddlewheels A, B, and C are somehow different to such an extent that droplets are flicked off in different ways. But it is the opinion of the authors that some
experimental error caused paddlewheel B to behave strangely, especially during test
c3 at 87 rpm.