When the capacitive liquid level sensing system ascertains a desired aspiration position of the probe tip 150 relative to the serum level 152 in the sample tube 15, the sensing system provides a sensor signal to initiate {HEAD ~ aspiration} of a sample of the serum 20 from the sample tube 15 into {TAIL ~ the probe} 12 
When the capacitive liquid level sensing system ascertains a desired aspiration position of the probe tip 150 relative to the serum level 152 in the sample tube 15 , the sensing system provides a sensor signal to initiate { HEAD ~ aspiration } of a sample of the serum 20 from the sample tube 15 into { TAIL ~ the probe } 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH