This Bio-Tek Instruments EL 403 Microplate Auto Washer is in used condition and was removed from a working environment. This unit came from a local lab that had surplus equipment. We guarantee this unit to be in functional condition with a 30 day full money back return policy. Buyer handling return shipping. We urge customers to view all photos as they show overall condition, included accessories and functionality. Please feel free to contact us with any questions.