Lonza Group

Arch Chemicals, headquartered in Norwalk, Conn., is a global biocides company and one of the leaders in providing innovative, chemistry-based solutions to control the growth of harmful microbes. Together with its subsidiaries, it has manufacturing and customer-support facilities in North and South America, Europe, Asia and Africa. Its focus is on water, hair and skin care products, pressure-treated wood, paints and building products, and health and hygiene applications. Its biocides portfolio includes four businesses, such as water sanitizers and related treatment chemicals that destroy harmful and life-threatening microbes. Its wood preservatives protect wood from fungal decay and insect damage, and its industrial biocides are incorporated into industrial, commercial and consumer products to provide protection against fungus, bacteria, viruses, algae and other harmful microbes. Arch Chemicals personal care products are used in hair and skin care products.