Collins GS Pulmonary Function testing system. Performed spirometry, helium dilution FRC and DLCO. Used a rolling-seal volume displacement spirometer. Circa 1995. Found at: http://www.pemed.com/respirat/collinsgs02_40.jpg
Collins GS Pulmonary Function testing system. Performed spirometry, helium dilution FRC and DLCO. Used a rolling-seal volume displacement spirometer. Circa 1995. Found at: http://www.pemed.com/respirat/collinsgs02_40.jpg