The book Modern Drainage Inspection And Sanitary Surveys was written by author Gerard J G Jensen Here you can read free online of Modern Drainage Inspection And Sanitary Surveys book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Modern Drainage Inspection And Sanitary Surveys a good or bad book?
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In all cases rinse the bottle several times with the water to be analysed, then fill to the neck and tie down the stopper. 5. When sending water for analysis, the source should be stated whether from the mains, cistern, deep or shallow well, or spring. It is also necessary to give particulars of any likely source of pollution, and, with well water, the nature of the soil through which the water has passed. The materials with which the water has been in contact should also be stated. Any filters... which may be in use in the house must be carefully examined, as they generally do far more harm D 2 5 2 than good, and actually pollute the water sought to be purified. This happens if the construction of the filters and their " mediums" is such as to favour putrefaction and the growth of low forms of life, which is the case with ail carbon, spongy iron, and kindred filters. The only filters FIG. 59- FIG. 60. Which can be recommended as safe are the " Chamberland Pasteur" (Fig. 59), " Nordmeyer-Berkefeld " (Fig.
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