. Carnegie Institution of Washington publication. . FIG. 21. FIG. 22. FIG. 21.—Caustic potash pipette used in the Zuntz-Geppert analysis apparatus. The inside cylinder is filled with glass tubes which give a large surface for absorption of carbon dioxide. The pipette for the absorption of oxygen is of similar construction, but the glass tubes are replaced by stick yellow phosphorus. FIG. 22.—Absorption pipette used in the Zuntz-Geppert analysis apparatus. It may contain either caustic potash solution for absorption of carbon dioxide or sodium hydrosulphite for the absorption of oxygen. pressur
. Carnegie Institution of Washington publication. . FIG. 21. FIG. 22. FIG. 21.—Caustic potash pipette used in the Zuntz-Geppert analysis apparatus. The inside cylinder is filled with glass tubes which give a large surface for absorption of carbon dioxide. The pipette for the absorption of oxygen is of similar construction, but the glass tubes are replaced by stick yellow phosphorus. FIG. 22.—Absorption pipette used in the Zuntz-Geppert analysis apparatus. It may contain either caustic potash solution for absorption of carbon dioxide or sodium hydrosulphite for the absorption of oxygen. pressure and the temperature of the bath. They are then driven into pipettes containing phosphorus, where the oxygen is absorbed; finally, the remaining gas, or nitrogen plus argon, is measured. The general construction of the gas-analysis apparatus may be seen in figure 20. A glass tank filled with water contains 7 burettes. The two outside burettes, 1 and 1, are designed to measure the collected gas and are therefore graduated in only from --100 to +101 They are connected at the top by the Y capillary connections, a, a, to the capillary tube R above the apparatus for drawing in the sample, and by the connections, b, b, to the caustic-potash pipettes, H and H. When the sample is drawn from the atmosphere or from the air going through the meter, the clamps at a and a are open, while the clamps at. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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