***The Flow Check adapter has been discontinued from Maxtec***Concentrator FlowmeterThe new FlowCheck flow meter works in conjunction with the Maxtec Handi+ and MaxO2+A oxygen analyzers, providing users with the ability to check oxygen concentration and flow all at once. This flow meter will indicate the flow from 0 - 8 liters per minute and is useful in nearly every application.Simple to useEasy to readMeasure flow with a high quality galvanic oxygen analyzerWorks with the Handi+ and MaxO2+A...