Lead acetate test for hydrogen sulphide in gas. . s, it has the advantage that it can beeasily and cheaply made from materials obtainable in almost anychemical laboratory or drug store without the sacrifice of theadvantages due to exactness of specifications. This apparatus is made from a glass tube, or a common cylin-drical gas chimney, 20 cm (8 inches) long and cm ( inches)in diameter, closed at top and bottom by. perforated stoppers. Hydrogen Sulphide Test 29 The pillar of a gas burner, from which the lava tip has beenremoved, is inserted through the lower stopper; and a small watch
Lead acetate test for hydrogen sulphide in gas. . s, it has the advantage that it can beeasily and cheaply made from materials obtainable in almost anychemical laboratory or drug store without the sacrifice of theadvantages due to exactness of specifications. This apparatus is made from a glass tube, or a common cylin-drical gas chimney, 20 cm (8 inches) long and cm ( inches)in diameter, closed at top and bottom by. perforated stoppers. Hydrogen Sulphide Test 29 The pillar of a gas burner, from which the lava tip has beenremoved, is inserted through the lower stopper; and a small watchglass, cm (I_I-5 inches) in diameter, is supported above theburner, to prevent the gas from impinging directly from the inleton the test paper. The watch glass is supported on three glasspegs, 1-3 cm ( inch) high, being held in place with small bitsof wax. The gas is burned from an ordinary open-flame burneron the upper stopper; this burner should be so selected that itwill pass 5 cubic feet of gas per hour under the ordinary pressure. Fig. 11.—Referees hydrogen sulphide test apparatus (\ size) of the gas supply. The test paper, which should be 2 by 6 cm( by inches), is hung on a glass hook so that it is held mid-way between the watch glass and the bottom of the upper stopper.(2) Referees Apparatus.—This form (see Fig. 11) is one usedcommonly in this country and for all official testing in London andmany other English cities. It consists essentially of a small belljar held down into a mercury seal, arranged with a central inlettube and outlet tube with elbow at the base. The test papers arehung on the six small hooks surrounding the inlet tube, as shownin the diagram, Fig. na. 3Q Technologic Papers of the Bureau of Standards 1
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernatio, bookyear1914
