OSA-319-AA-18L Class B Autoclave with built-in printer and built-in USB. Ultra modern design: 1. 7 inch full-color touch LCD screen. 2. The operation is simple, fast, be clear at a glance. Opening Function: 1. Opening storage tank, waste water tank, easy to clean. 2. Large capacity, 3.5L storage tank, 3L waste water tank. Test function: 1.