This Oncor S2300 N.E.A.T. Nucleic Acid Electrophoresis Transfer System / 150V 300mA is in great condition and is guaranteed to be in functional condition with a 30 day full money back return policy. This item came from a local lab that had surplus inventory and is most likely in unused condition. Unit was listed as used due to lack of factory packing and slight aesthetic signs of storage. We urge customers to view all photos as they show overall condition, included accessories and useful information. Please feel free to contact us with any questions.