Oxygen flow meter with regulator with bottle and cannula-0 to 15lpm PRODUCT INFO This is used with medical oxygen cylinders. This is used for regulating the supply of oxygen to the patient from the cylinder. Gauge ranges from 0-250 K per cm�². and the flow meter range is 0-10 liters per minute. A pressure gauge indicates the cylinder contents. The flowmeter with humidifier is used in reducing gas pressure and adjusting gas volume, which rescue patient and treat as oxygen therapy by the hospital.