... system 1.tank capacity:30L 2.with digital timer&heater, 3.with drainage valve 4.110V or 220V ultrasonic ... timer&heaterJP-100S(digital, 30L, 8gallon)(with digital Timer & Heater) Skymen Digital Ultrasonic Cleaning machine Well cleaning efficiency for industrial ... after clean:1.Printer inkjet-heads, seals, ancient coins, badges, valves, machine nozzles,2.Silverware. bronze ware, antiques, Jewelry, rings, ...