{HEAD ~ The liquid level} of {TAIL ~ the bioreactor} 17 can be monitored by a liquid level indicator 18 which is in fluid communication with the bioreactor 17 
of
{ HEAD ~ The liquid level } of { TAIL ~ the bioreactor } 17 can be monitored by a liquid level indicator 18 which is in fluid communication with the bioreactor 17
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH