This carriage travels from one end to the other at a top speed of 6.5
cm/min, meaning that it takes 35 minutes to traverse the bioreactor
for one end to the other.
The screws rotate at a top speed 22 rpm. The agitation regime, in
terms of the frequency and duration of mixing events, can be varied.
The carriage has spray nozzles for allowing the addition of
inoculum, water, nutrient or pH-correcting solutions during mixing.