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  2. DU spectrophotometer - Wikipedia

    en.wikipedia.org/wiki/DU_spectrophotometer

    The DU was developed at National Technical Laboratories (later Beckman Instruments) under the direction of Arnold Orville Beckman, an American chemist and inventor. [13] [14] Beginning in 1940, National Technical Laboratories developed three in-house prototype models (A, B, C) and one limited distribution model (D) before moving to full commercial production with the DU in 1941.

  3. Spectrophotometry - Wikipedia

    en.wikipedia.org/wiki/Spectrophotometry

    Table-top spectrophotometer Beckman IR-1 Spectrophotometer, c. 1941 Beckman Model DB Spectrophotometer (a double beam model), 1960 Hand-held spectrophotometer used in graphic industry [1] Spectrophotometry is a branch of electromagnetic spectroscopy concerned with the quantitative measurement of the reflection or transmission properties of a ...

  4. Beckman Coulter - Wikipedia

    en.wikipedia.org/wiki/Beckman_Coulter

    Beckman Coulter, Inc. is a Danaher Corporation company that develops, manufactures, and markets products relevant to biomedical testing. It operates in the industries of diagnostics and life sciences .

  5. Applied Spectral Imaging - Wikipedia

    en.wikipedia.org/wiki/Applied_Spectral_Imaging

    Applied Spectral Imaging or ASI is a multinational biomedical company that develops and manufactures microscopy imaging and digital analysis tools for hospitals, service laboratories and research centers. The company provides cytogenetic, pathology, and research laboratories with bright-field, fluorescence and spectral imaging in clinical ...

  6. Arnold Beckman - Wikipedia

    en.wikipedia.org/wiki/Arnold_Beckman

    Arnold Orville Beckman (April 10, 1900 – May 18, 2004) was an American chemist, inventor, investor, and philanthropist. While a professor at California Institute of Technology, he founded Beckman Instruments based on his 1934 invention of the pH meter, a device for measuring acidity (and alkalinity), later considered to have "revolutionized the study of chemistry and biology". [1]

  7. Spectronic 20 - Wikipedia

    en.wikipedia.org/wiki/Spectronic_20

    The Spectronic 20 is a brand of single-beam spectrophotometer, designed to operate in the visible spectrum [1] across a wavelength range of 340 nm to 950 nm, with a spectral bandpass of 20 nm. [ 2 ] [ 3 ] It is designed for quantitative absorption measurement at single wavelengths. [ 1 ]