This Bio-Rad GS-800 Calibrated Imaging Densitometer is in good condition and was removed from a working environment. These units came from a local lab that had surplus lightly used equipment. Software required for operation is not included (reflected in list price). We urge customers to view all photos as they show overall condition, included accessories and functionality. Although we do not have the means for full testing (lack of necessary software), we guarantee functionality with a 30-day full money back return policy. Buyer handling return shipping. We will be happy to provide additional information as well as photos so please feel free to contact us with any questions. For additional information please copy and paste link to user guide PDF below: https://www.bio-rad.com/webroot/web/pdf/lsr/literature/4000188.pdf If link is no longer available, please contact us for copy of PDF