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