Arch Chemicals, Inc. (Arch) is a global biocides company. The Company provides chemistry-based and related solutions to selectively destroy and control the growth of harmful microbes. Arch is focused in water treatment, hair and skin care products, treated wood, preservation and protection applications, such as for paints and building products, and health and hygiene applications. The Company’s business segments are Treatment Products and Performance Products. On October 10, 2008, Arch acquired the water treatment chemicals business of Advantis Technologies, Inc. (Advantis).