Patent attributes
An object of the invention is to provide a multigas incubator capable of shortening humidity-returning time after closing its door. The incubator comprises an adiabatic box main body having an opening on a front face thereof, an adiabatic door mounted on the adiabatic box main body in an openable and closable manner, a transparent inner door for openably closing the opening, and an incubation room surrounded by the inner door and the adiabatic box main body for incubating samples such as cells, microbes and the like. The adiabatic box main body comprises an outer box made of a metal, an inner box made of a metal, a heat insulating material arranged inside the outer box between the outer and inner boxes, and an air layer arranged more inside than the heat insulating material. Gases supplied for controlling concentrations of gases in the incubation room are jetted into humidification water.