The Activator speeds up the curing process of WEICON Cyanoacrylate Adhesives. When applied to absorbing surfaces, like for example wood or foam etc., and all chemically-treated surfaces, like for example zinc galvanised metals etc., the activator’s effectiveness lasts approx. one minute. With non-absorbent surfaces the Activator’s effectiveness lasts up to approx. twelve hours. Use is recommendable with: highly viscous WEICON Contact types, large thickness of the adhesive layer, absorbing and porous surfaces, Passive materials (alkaline surfaces, like for example zinc coated metal parts), disadvantageous environmental conditions (low temperatures, too low air humidity < 30%).