. Bulletin of the Department of Agriculture. Agriculture; Agriculture. S^J9''^>J'U Contribution from the Bureau of Chemistry CARL L. ALSBERG, Chief. J^^^^U Washington, D. C. PROFESSIONAL PAPER May 26, 1916 BACTERIA IN COMMERCIAL BOTTLED WATERS. By Maud Mason Obst, Bacteriological Chemist. CONTENTS. Introduction 1 Significance of bacteria in potable waters 2 Inspection of springs 3 Examination of commercial bottled waters. Conclusions Tabulated data INTRODUCTION. During the last six years from 1 to 17 samples of bottled waters from each of 110 American springs and from 57 sources in for
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. S^J9''^>J'U Contribution from the Bureau of Chemistry CARL L. ALSBERG, Chief. J^^^^U Washington, D. C. PROFESSIONAL PAPER May 26, 1916 BACTERIA IN COMMERCIAL BOTTLED WATERS. By Maud Mason Obst, Bacteriological Chemist. CONTENTS. Introduction 1 Significance of bacteria in potable waters 2 Inspection of springs 3 Examination of commercial bottled waters. Conclusions Tabulated data INTRODUCTION. During the last six years from 1 to 17 samples of bottled waters from each of 110 American springs and from 57 sources in foreign countries have been examined in the Bacteriological Laboratory of the Bureau of Chemistry.^ A comparative study of the results obtained should, therefore, contribute toward the formation of an opinion as to the freedom from contamination which we have a right to expect and to demand in the case of this product. These bacterio- logical analyses have been brought together and tabulated; and the results of this study have been considered to determine whether the standard adopted by the United States Public Health Service^ for water on trains could be fairly appUed to bottled waters, or whether some other standard would be more just. A questionnaire was also sent out to a number of bacteriologists who have been associated with sanitary and aUied problems. This questionnaire was arranged primarily to learn the attitude of a widely distributed group of workers in regard to bacterial tolerance in bottled waters. Of the 49 correspondents who have rephed, 8 had not worked upon water sufficiently to feel competent to express any opinion. The remaining 41 rephes are summarized as follows: Eight ( per cent) stated that to them the term ''bottled water" implied an unwritten guaranty of absolute purity;" five ( per 1 Examinations were made by various members of the Bacteriological Laboratory, including Dr. Geo. W. Stiles, Minnie Jenkins, Carleton Bates, Ruth C. Greatho
Size: 2266px × 1103px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
