12-Hole Water Bath is frequently used in chemistry and biology labs for a number of procedures, including enzyme reactions, protein digestion, and the incubation of bacterial cultures. For many laboratory procedures, maintaining a constant temperature over a long period of time is useful. It is used to warm or cool samples that have been placed in containers. 12-Hole Water Bath is made up of a rectangular container with twelve holes, or wells, where samples can be put and heated or cooled in accordance with the temperature of the water bath. This is very easy to install as well as simple to use. This is very economical to have.