{HEAD ~ The digital processor} is adapted to modify {TAIL ~ the potential} to maintain the current inside a predetermined range such that the potential is representative of the solution pH when the current is inside the predetermined range 
is adapted to modify
{ HEAD ~ The digital processor } is adapted to modify { TAIL ~ the potential } to maintain the current inside a predetermined range such that the potential is representative of the solution pH when the current is inside the predetermined range
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL 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 OTH OTH