This is an outside view of Kanto's ammonium hydroxide production. Kanto utilizes anhydrous ammonia and ultra pure water to manufacture ultra high purity ppt-grade ammonium hydroxide at its Portland Manufacturing Facility. This production capability was added to Kanto's facility in 1999 to meet a growing demand from customers around the United States. Kanto currently fills both lorry and ISO tanks with ppt-grade ammonium hydroxide.