TheFlowTubeKitwithafilterisusedinAnesthesiaMachines.Theflowmeterassemblyisusedforcontrolling,measuringandindicatingtherateofflowofOxygen(O₂)passingthroughit.Itconsistsofafilter,flowmeterandO-rings.TheproductmaterialismadeupofborosilicateglassorPyrexwhichisextremelyresistanttoozoneandUVoverlongtimeperiodsandalsoduetoitswideoperatingtemperaturesuitable foruseinmedicalapplications.ThiskitisusedinfewAnesthesiaMachinessuchasARCAespireView,ARCAestiva3000andARCAespire7900.