The Bio-Tek Model VT-1 Medical Gas Flow Analyzer / Ventilator Calibrator Tester is a high-quality unit designed for use in medical, microbiological, and biological laboratories. Manufactured by Bio-Tek in the United States, this device is intended to accurately analyze and calibrate medical gas flow rates, ensuring proper functionality in life-saving medical equipment such as ventilators. With its reliable performance and precise measurements, the Bio-Tek VT-1 is a valuable tool for maintaining optimal conditions in critical care settings. Powers on selling as is no returns to heavy MAKE OFFER , LETS GOOO