The FDA's Center for Devices and Radiological Health requires the purchase of one commercial Electrosurgical Unit (ESU) with accessories for laboratory experiments and test method development. The system must include a touchscreen interface, tissue impedance monitoring, and support for monopolar, bipolar, and vessel-sealing modes. Delivery is required within 60 calendar days after contract award. The equipment must be new, fully operational, and include a minimum one-year manufacturer's warranty. Performance location is not specified.