Respiratory - Oxygen Aids - Vacu-Aide QSU Quiet Suction Unit : Vacu-Aide QSU Quiet Suction Unit, 800 cc disposable bottle, 6' tubing and AC & DC power cords. With more than 50% reduction in sound, the Vacu-Aide QSU is the quietest high flow/high suction portable unit on the market, making it a smart choice for patients from neonate to adult. Vacuum adjustment allows for 50-550 mm Hg and a free flow of 27 liters/minute. Optional sealed lead acid battery for use up to one-hour operation. Meets American Association for Respiratory Care (AARC) guidelines for neonatal, infant, child and adult homecare suctioning. Can return a patient to a state of comfort quickly - Meets ISO 10079-1:2009 high vacuum, high flow classification. Unit can be operated while inside the carrying case. Float shutoff on container to protect against overflow and integrated bacteria filter to prevent back flow.