This refrigerated/heated circulating bath has a cooling capacity of 220 W and includes a pump for external circulation and a digital thermostat for of liquid temperatures in the lab. Use it to maintain water at temperatures both above and below room temperature. Use it with anti-freeze liquid like glycol for keeping sea water at sub zero temperatures, e.g. for polar biology. 

This heated circulating bath includes a pump for external circulation and digital thermostat for control of liquid temperatures in the lab. Use it to maintain water at temperatures above room temperature. Its compact size makes it convenient for use even in small lab spaces.