ThebottomchasisismusedintheabsorberofthebreathingcircuitofAnesthesiaDeliverysystem.adeupofTPSF-FRG10whichisaPolybutyleneTerephthalate(PBT)productfilledwith10%glassfiber.This material exhibitsgooddimesnionalstability,lowfriction,flameretardantandgoodabrasionresistance.ThechasisislabelledwithsetAGSS(AnestheticGasScavengingSystem)inlet/outlet.Theab sorberbottomchasisiscompatiblewithAestivaMRI,Aestiva7900andAestiva71 00.