EDISON LABORATORY Edison National Historic Site West Orange, New Jersey Volume 1

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Object and Location Evidence Recommendation TABLE (against east wall, between closets and 5) See figures and for example. There was much testing required the laboratory that was too much for one man one table. Goldstein and Rosenstein were also involved finding substitutes for materials used batteries.CLOSET Inorganic including: Ammonium Sulphide Iron Nickel Cobalt Aluminum Chromium Manganese Zinc 1914 inventory. Acquire. EDIS collection. EDIS collection.629 829 Laverty correspondence Historian’s Note 90. 215 . Testing/Batteries—Rosenstein was Goldstein’s assistant and helped him the analysis various chemicals. CLOSET Hydrogen Sulphite including: Bismuth Copper Lead Tin Cadmium Inorganic Acids Arsenic Carbon 1914 inventory. The filter paper and evaporating dishes were used dry out these solutions obtain the residue nickel flake (and other metals used the batteries) for subsequent testing. They examined the salt nickel hydroxide help determine if some other salt would the job better. EDIS collection. Rosenstein would use the same equipment his supervisor: mortar and pestle break materials, measuring cylinders record amounts, and hydrometers test the specific gravity solutions used storage batteries. STANDS, metal (on table) Figures and 21