The reaction of the HS with fixer solution containing silver results in precipitation of Ag2 S, {HEAD ~ maintenance} of {TAIL ~ the pH level} and regeneration of the thiosulfate in the fixer solution 
of
The reaction of the HS with fixer solution containing silver results in precipitation of Ag2 S , { HEAD ~ maintenance } of { TAIL ~ the pH level } and regeneration of the thiosulfate in the fixer solution
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH