This invention relates to the use of {HEAD ~ a hydrosulfide reagent} to precipitate {TAIL ~ silver sulfide} from spent photographic fixer solutions 
to precipitate
This invention relates to the use of { HEAD ~ a hydrosulfide reagent } to precipitate { TAIL ~ silver sulfide } from spent photographic fixer solutions
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH