TheLungTestisoneofthecomponentsthatisconsideredaventilatoraccessory.Whentheventilatorisdisconnectedfromapatient,itisthetoolusedtocheckthefunctionandaccuracyoftheventilator.Itisalsousedtosimulatetheresistanceandcomplianceofalung.thatalarmsarefunctioningnormally.Duringthealarmtestitshouldbeconnectedtothepatientconnection.Theventilatormustbetestedbeforethefirstpatientand ondailybasispriortoanypatient s.It is highly reliable, durable and efficient. ,ARCAisys,ARCTec7VaporizerandARCAespire7900.