This Heraeus HeraCell 150 Double-Stacked Copper CO2 Incubator is in used condition, has been tested and is guaranteed to be functional. These incubators came from a local lab that had surplus equipment and show some signs of use. We urge customers to view all photos as they show overall condition, included accessories and functionality. We will be happy to provide additional photos or information so please feel free to contact us with any questions.