Model NU-5800 In-VitroCell ES (Energy Saver) Direct Heat CO2 Incubator offers a reliable, controlled in-vitro environment suitable for growing tissue cell cultures as well as storing and preserving animal tissue cell cultures. Model NU-5800 features a closed loop HEPA filtration to minimize potential contamination from entering the chamber, a microprocessor-based dual wave infrared (IR) sensor for controlling the CO2 levels and a state-of-the-art NuTouch electronic control system for programming optimal environment conditions.