Watson-Marlow Bredel, of Wilm-ington, Mass., introduces its new 323 pump. Designed to provide high performance pumping for environmental applications, the pump is ideal for chemical metering. The company’s pump is a low-maintenance, low-cost pump that outperforms traditional “throw-away?? solenoid diaphragm pumps. The product reliably pumps harsh chemicals such as sodium hypochlorite, ferric chloride, alum, sodium bisulfite, caustic, aqueous ammonia, polymer and many others.