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W.L. Badger Associates Collection.
The firm was renowned for its work on evaporators for water desalination plants in the United States and abroad.
BetzDearborn, Incorporated Records
BetzDearborn, Incorporated was an American chemical company that manufactured water treatment chemicals for commercial and industrial applications.
Wilfred F. Langelier papers.
The Wilfred F. Langelier Papers contain materials concerning American sanitary engineer and civil engineering professor Wilfred F. Langelier.
Records of the American Chemical Society Division of Environmental Chemistry, 1948-
The collection is divided between division documents and collections of preprints of talks presented at various Division of Environmental Chemistry symposia.
Laboratory notes taken by Clara Esther Hartley, 1895-1896.
Laboratory notebook used by Clara Esther Hartley during a high school-level chemistry class in Troy, Ohio. notes at the end of the volume include an analysis of drinking water drawn from the well of a local resident. In her analysis, Hartley notes sources of pollution and finds traces of chloride and nitrates in excess of 425 mg, leading her to conclude "This water is to [sic] foul to be used for drinking."
Laboratory exercises for Household and Organic Chemistry course at Pennsylvania State University
Two notebooks of laboratory exercises and study questions for Household and Organic Chemistry (Chemistry 52) course taught by American chemist, home economist, and college administrator Dr. Pauline Beery Mack at Pennsylvania State University. The notebooks contain tentative lecture schedules on a range of topics, including water purification, waste disposal, cleaning and polishing agents, stain removal, and aromatic compounds, as well as the procedure for writing out laboratory experiments.