Deep-chamber heated water baths are ideally suited for applications using large volumetric flasks, large glass bottles or other tall containers. It features an easy-to-read LED display and a back-up over-temperature controller. Visual alarm indicates when over-temperature safety is activated. A fully insulated air jacket surrounds the tank, creating optimal temperature uniformity and eliminating hot spots. The one-piece, seamless, stainless steel tank has corrosion-resistant polymer coating.