{HEAD ~ A current} between {TAIL ~ the electrodes} is then measured and based on the measured current, a determination is made whether a predetermined contamination level exists within the fluid sample 
between
{ HEAD ~ A current } between { TAIL ~ the electrodes } is then measured and based on the measured current , a determination is made whether a predetermined contamination level exists within the fluid sample
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 OTH OTH OTH OTH OTH