Culligan international, founded 1936, is a global provider for ultrapure water production technologies for the semiconductor industry. The Reynolds Culligan business unit provides solutions for reverse osmosis, ultraviolet (UV) treatment systems, and ultrapure water systems. Culligan International has over 35 brands in its portfolio. Key products include its Portable Exchange Deionisation (PEDI) equipment; its automatic deionization equipment; ultra-filtration membranes; and UV lamps. The company also provides maintenance services and replacement parts for ultrapure water systems.