. The Journal of laboratory and clinical medicine . Fig. 6.—A, Top and side views of air connection for pumping expired air into siphon , Filling cup and pressure vent in siphon reservoir. C, Check valve on air line. /-. Fig. 7.—Water valves used with twin fonn of spirometer. A. Inspiration valve. B, Expirationvalve. A rubber tube connects C with a K to the stem of which a mouth piece is attached, andanother rubber tube connects the other limb of the y to Z?. E is connected to the spirometer tap. 426 THE JOURNAL OF LABORATORY AXD CLINICAL MEDICINE ceiver. AVlien this is completely f
. The Journal of laboratory and clinical medicine . Fig. 6.—A, Top and side views of air connection for pumping expired air into siphon , Filling cup and pressure vent in siphon reservoir. C, Check valve on air line. /-. Fig. 7.—Water valves used with twin fonn of spirometer. A. Inspiration valve. B, Expirationvalve. A rubber tube connects C with a K to the stem of which a mouth piece is attached, andanother rubber tube connects the other limb of the y to Z?. E is connected to the spirometer tap. 426 THE JOURNAL OF LABORATORY AXD CLINICAL MEDICINE ceiver. AVlien this is completely filled with •water, the vent tube is clampednear the outer end and the tap on the top of the reservoir opened to releasethe pressure and the siphon tube pulled upward until its lower end is checkedby a stop just l)elow the inner surface of the reservoir. The subject breathescontinuously through the spirometer during this entire period which ensuresthat all air used for saturation purposes and that all air in the connections,, the small quantity contained in the spirometer samplinia: tubes, is the sub-jects expired air. The spirometer dial is now read for zero, the time noted and the clipon the sampling tube of the re
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Keywords: ., bookcentury1900, bookdecade1910, booksubject, booksubjectmedicine
