Handbook of Technical Gas-Analysis

Handbook of Technical Gas-Analysis

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ...carbon dioxide, and this can be continued till needle-shaped crystals of potassium hydrocarbonate appear in the contracted part of A. Then b is closed, the elastic tube is taken off, whereupon the pressure within A becomes equal to that of the outer air, and a is turned 90 degrees, so that A communicates with B. The potash liquor at once rises in A, and by inclining the apparatus, ultimately to the horizontal, the absorption in A is accelerated without forming a vacuum. At last the apparatus is moved upwards and downwards, then fixed in the vertical position and the volume is read off, after lifting up bottle D and levelling the liquid in D and A. Or else a correction table is made which admits of taking the reading without moving bottle D. There should be no greater difference between two tests than 0-05 p. cent. As the contracted part of A is divided into-g--c.c., the readings can be made to 0-01 c.c. In order to take a sample of the liquid contents of an iron bottle, this is placed horizontally on a stool so that the couplingjoint of the valve points upwards. By slowly opening the valve it is generally possible to produce a suitable, moderate stream of CO., but small quantities of solid C02 are always ejected. With some valves the adjusting of the stream is very troublesome; it issues in jerks and sometimes stops, but with the slightest touch of the valve it becomes so violent that the elastic tubes are thrown off. In such cases a reducing-valve can be interposed, but the gas must be allowed to issue long enough to drive out all the air from the valves: in this case the results agree completely with those obtained directly from the contents of the bottle. Holste (Zeitsch. f. d. ges. Kohlensaure-Industrie, 1897, p. 462) has described a...show more

Product details

  • Paperback | 54 pages
  • 189 x 246 x 3mm | 113g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236971418
  • 9781236971418