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Autor(en): 
  • William T. Sedgwick
  • On Methods Used and Results Obtained in Making Germicidal-Efficiency Tests of a Disinfectant: For Use in Railway Sanitation (Classic Reprint) 
     

    (Buch)
    Dieser Artikel gilt, aufgrund seiner Grösse, beim Versand als 2 Artikel!


    Übersicht
     
    Lieferstatus:   i.d.R. innert 5-10 Tagen versandfertig
    Veröffentlichung:  August 2015  
    Genre:  Naturwissensch., Medizin, Technik 
    ISBN:  9781332243648 
    EAN-Code: 
    9781332243648 
    Verlag:  Forgotten Books 
    Einband:  Kartoniert  
    Sprache:  English  
    Dimensionen:  H 229 mm / B 152 mm / D 2 mm 
    Gewicht:  56 gr 
    Seiten:  30 
    Zus. Info:  23:B&W 6 x 9 in or 229 x 152 mm Perfect Bound on White w/Gloss Lam 
    Bewertung: Titel bewerten / Meinung schreiben
    Inhalt:
    Excerpt from On Methods Used and Results Obtained in Making Germicidal-Efficiency Tests of a Disinfectant: For Use in Railway Sanitation

    The disinfectant submitted to me for tests of its germicidal power was said to consist of a concentrated solution of chloride of zinc, chloride of copper, and bichloride of mercury, with a few drops of terebene. The terebene was added as a telltale, to inform the officers whether the disinfectant had been faithfully used, rather than as a disinfectant. I was also informed that the disinfectant contains one part in five hundred of bichloride of mercury and a little over 45 per cent. Of chloride of zinc. The chloride of copper was added because a little copper salt was desired to fix sulphuretted hydrogen, and the chloride of zinc solution was made very strong on account of the well-known deodorizing properties of this material.

    I am also informed by Dr. Dudley that this disinfectant is made by the railroad company, for its own use, under the supervision of the officers of its laboratory. Old battery zincs which are no longer useful in the batteries, muriatic acid, sulphate of copper, common salt, and bichloride of mercury are used in its manufacture. The actual cost of the disinfecting material in an eight-ounce bottle is about two and one half cents. The material is distributed to the service in wooden boxes, holding twenty-four bottles each, and in barrels. If these boxes and bottles are returned, the real cost to the different parts of the service is the figure given above. If the bottles are broken and the boxes destroyed the cost is somewhat greater. In barrels which are not returned the cost is somewhat less than in bottles, no labor being required for bottling. There were made and used on the whole Pennsylvania railway system during the year 1892 366 gross of eight-ounce bottles and 69 fifty-gallon barrels.

    The specifications to which the disinfectant must conform are given as follows.

    About the Publisher

    Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com

    This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

      



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