GREEN'S CLEAR water-based wood preservative contains copper 8-quinolinolate equivalent to 0.18% copper as metal. A copper 8-quinolinolate water-based wood preservative that may be brush applied for surface protection of most woods. Dip soaking or pressure impregnation of GREEN'S CLEAR will result in deeper penetration resulting in longer preservation of treatable species. The copper 8-quinolinolate in GREEN'S CLEAR reacts with the cellulose of wood.