AEROFLOAT 241 promoter flotation reagent for covellite - this flotation reagent is Water soluble in all concentrations. Florrea has been supplying the equivalent of this flotation collector-- AEROFLOAT 241 promoter flotation reagent. Most selective of all liquid AEROFLOAT promoters. Widely used for flotation of lead from lead/zinc ores, and as a secondary collector for some copper ores. Please contact us now for supplies.