Simple, economical, moderate-sized CO2 incubator with microprocessor-controlled 6-sided heating. Heated outer door with glass inner door, HEPA filtered CO2 inlet and fanless convection heating minimize sample exposure. Simple, large character temperature and % CO2 display. Accurate IR CO2 sensing and mulitple temperature monitors ensure consistent conditions. Sealed stainless interior and removable stainless shelves make cleaning simple. For use on or under the bench, or stacked.