... 1.N910 copper-specific extractant 2.yellow or amber-coloured liquid,no visible impurities Copper-specific Extractant N910 1. Properties:yellow or ... can come from printed circuit, copper junk, copper alloy, copper/ lead scum.Since viscosity for N910 is very low, Cu content can ... with care,no vigorous strike is permitted.Deposite in shady, ariy and dry warehouse,keep away from fire and rain. Copper- ...