Code: 12500150-39 The activator accelerates the curing process of WEICON Cyanoacrylate Adhesives. The activator is effective for approximately 1 minute when applied to absorbent surfaces such as wood or foam and chemically treated surfaces such as zinc galvanized metals. The effectiveness of the activator on non-absorbent surfaces lasts up to 12 hours. We recommend the use of highly viscous WEICON Contact types, in large layer thicknesses, on absorbent and porous surfaces, passive materials (alkaline surfaces such as zinc-plated metal parts), in adverse weather conditions (low temperatures, very low humidity < 30%).