This Hoefer TE77XP Electrophoresis Blotter Semi-Dry Transfer Unit is in great condition and was removed from a working environment. This item came from a local lab that had surplus lightly used equipment. Sale of unit comes with a 30-day full money back guarantee return policy. We will be happy to provide additional information as well as photos so please feel free to contact us with any questions. TE77XP Semi-Dry Transfer Unit with Built-In Power Supply Electrotransfers proteins from polyacrylamide gels onto membranes (either nitrocellulose or PVDF) rapidly and efficiently. Unique design includes an intelligent built-in power supply which automatically monitors the transfer status, stopping the transfer before the stack overheats. The Semi-Dry Transfer Units support as many as two layers of gels being transferred simultaneously. The TE77XP has a 21 x 26 cm transfer area for a capacity of up to 12 mini gels at one time.