kurtak
Well-known member
Could be any of those things & as well it could be silver chloride &/or combination of any/all those thingsCould be tin.... GF is dirty like that. Could be copper chloride from dilution. Could be to much smb. Could be some type of filler. I've run into GF with plaster before. Sort of like the sand like filler in silver knife handles. The 2nd run will clear it up and what's not water or acid soluble will be trapped in the filter.
Kurt