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10LPM flow meter for gas/air/oxygen Remark 1).Application:widely used for measuring and controlling the flow of oxygen concentrator,also used for gas. 2).Body Material:Acrylic 3).Feature:beautiful look,low weight,unbreakable and long life span. 4).It could be also made into 6.35mm hose connection or 1/4" NPT,BSP,BSPT connection type.