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    • circa 1890

    Brass cup-shaped receptacle used when crushing or grinding ingredients. Side of receptacle has two handles. Grooves along top and bottom circumference.

    • 1980s

    Beckman's Biomek 1000 Automated Laboratory Workstation was released in 1986. New models continued to be added to the Biomek line for the next two decades.

    • 1990s

    Beckman's Biomek workstations debuted in the mid-1980s and additional models were released over the next two decades. The Biomek 2000 was released in 1994.

    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922
    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922
    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922
    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922
    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922
    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922

    Combination of photomicrographic camera and metallurgical microscope.

    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922
    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922

    Moisture and milk testers for determining fat and total solids in milk and dairy products according to the Mojonnier process.

    • Part of Catalog of Laboratory Apparatus and Reagents for Industrial—Medical—Educational Laboratories
    • 1922
    • circa 1910

    Photograph depicting male and female chemistry students in a laboratory at an unidentified school or college. The students are grouped around several laboratory stations and are seen using test tubes and Bunsen burners…

    • circa 1937

    Group photograph depicting members of the chemistry club at Wilson College in Chambersburg, Pennsylvania. The group consists of nine women gathered around a table while observing one member pouring an unknown substance…

    • circa 1900

    Photograph depicting a group of male and female chemistry students at an unknown school or college. The students are posed holding assorted laboratory equipment and glassware. Some of the female students are also…

    • Part of Catalog K: Physical Apparatus for Universities and Colleges
    • 1912-May

    Instrument that measures the wavelengths of light through a chemical sample. Can be used to determine elements in a sample when different elements emit different wavelengths of light. Illustrated instrument made by…

    • Part of Catalog K: Physical Apparatus for Universities and Colleges
    • 1912-May

    Spectroscopes use a lens or prism to disperse light into wavelengths. The spectroscopes shown can be handheld (top image) or attached to a camera (bottom image) to record the observation.

    • Part of Catalog K: Physical Apparatus for Universities and Colleges
    • 1912-May

    Instruments designed for photometric analysis. Photometers can be used to measure the presence and concentration of organic and inorganic compounds in solution by determining the absorbance of specific wavelengths of…

    • Part of Catalog K: Physical Apparatus for Universities and Colleges
    • 1912-May

    Wave apparatuses for the study of transverse and longitudinal waves.

    • Part of Catalog K: Physical Apparatus for Universities and Colleges
    • 1912-May

    Instruments for measuring both voltage and amperes of direct electric current.

    • Part of Catalog K: Physical Apparatus for Universities and Colleges
    • 1912-May

    "Parsons' latest improved design, for controlling incandescent lighting circuits, and for demonstrating the laws of series and parallel combinations."

    • Part of Catalog K: Physical Apparatus for Universities and Colleges
    • 1912-May

    From page 97: "These cells show the extraordinary property which selenium possesses of changing its electrical resistance under the influence of light."