Gas and fuel analysis for engineers A compend for those interested in the economical application of fuel Prepared especially for the use of students at the Massachusetts institute of technology . h a rubber bag; this form, afterten years of use, can be said to satisfactorily take theplace of the cumbersome compound pipette. The pipette for fuming sulphuric acid f is shown atFy and differs from the ordinary in that vertical tubesafter the manner of those in the Orsat pipettes replacethe usual glass beads. This prevents the trapping ofany gas by the filling, which was so common with thebeads and
Gas and fuel analysis for engineers A compend for those interested in the economical application of fuel Prepared especially for the use of students at the Massachusetts institute of technology . h a rubber bag; this form, afterten years of use, can be said to satisfactorily take theplace of the cumbersome compound pipette. The pipette for fuming sulphuric acid f is shown atFy and differs from the ordinary in that vertical tubesafter the manner of those in the Orsat pipettes replacethe usual glass beads. This prevents the trapping ofany gas by the filling, which was so common with thebeads and glass wool. E represents the large explo-sion pipette,\ of about 250 cc. capacity, with walls halfan inch thick; the explosion wires enter at the top andbottom to prevent short-circuiting; mercury is theconfining liquid. The small explosion pipette holds * Gill, Am. Chem. J., 14, 231 (1892).f Id., J. Am. Chem. Soc, 18, 67 (1896).\ Gill, J. Am. Chem. Soc, 17, 771 (1895). 36 APPARATUS. 37 about no cc, and is of glass, the same thickness asthe simple pipettes. Water is here used as the confin-ing liquid, and also usually in the burette. An induction coil capable of giving a half-inch spark,. Fig. 12.—Showing Hempel Burette connected with theSimple Pipette on the Stand. with a six-cell Samson battery, four simplepipettes and a mercury burette, complete the outfit. The burette should be carefully calibrated and thecorrections may very well be etched upon it oppositethe io-cc. divisions. 3» GAS AND FUEL ANALYSIS. In working with the apparatus the pipettes are placedupon the adjustable stand 5 and connection made withthe doubly bent capillary tube. Manipulation.—To acquire facility with the use ofthe apparatus before proceeding to the analysis of
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