The Constant Chlor Plus MC4-150 dry calcium hypochlorite feeding system from Arch Chemicals, a Lonza company, prepares and automatically delivers a consistently accurate dose of liquid available chlorine for disinfection. The feeding system can supply up to 150 pounds of available chlorine per day without storage and handling issues. This customizable feeder uses EPA-approved dry calcium hypochlorite briquettes and a spray technology to produce and maintain a fresh liquid chlorine solution. 800/478-5727; www.archwaterworks.com.