These water baths and accessories are ideally suited to all general laboratory applications. All baths together with the optional accessories are designed to be used with the complementary circulators. Cooling baths are used extensively in organic chemistry for a variety of reasons. The low temperature of these baths is determined both by the appropriate use of solvent as well as a cryogenic agent such as liquid nitrogen, dry ice (CO2) or ice. Most of these methods require continuous monitoring to ensure the temperature remains steady. For longer or unmonitored reactions, it may be best to invest in a cryocooler. Temperatures between -20 and -80° can be obtained using varied mixtures of ethylene glycol and ethanol over dry ice.