Circulating Baths from PolyScience, Div. of Preston Industries, are versatile temperature control products designed to streamline work processes. Available with a choice of six controllers, they offer a wide range of functionality, with temperature ranges from -40 to 392 degrees F. They offer time/temperature programming capabilities and are equipped with connectivity options for RS-232, RS-485, Ethernet, USB to Flash Drive and USB to PC. Remote on/off and external temperature probe ports are built-in. Models that conform to APHA, AWWA, WEF and EPA testing standards are available. 800/229-7569; www.polyscience.com.