The process comprises introducing {HEAD ~ a hydrosulfide reagent} into {TAIL ~ the fixer solution}, which contains silver, to precipitate silver sulfide while maintaining pH and thiosulfate levels in the fixer to allow for reuse 
into
The process comprises introducing { HEAD ~ a hydrosulfide reagent } into { TAIL ~ the fixer solution } , which contains silver , to precipitate silver sulfide while maintaining pH and thiosulfate levels in the fixer to allow for reuse
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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