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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 .
Schematic diagram of 3-part analyzer. A 3-part differential cell counter uses Coulter's principle to find the size and volume of the cell. The sample is lysed and dissolved into an electrolyte solution in a container, which also holds a smaller container.
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.
Arnold Orville Beckman, chemist and entrepreneur; Beckman Coulter, a biomedical laboratory instruments company founded by Arnold O. Beckman; 3737 Beckman, an asteroid; Institutes and research centers supported by the Arnold and Mabel Beckman Foundation Beckman Center for Molecular and Genetic Medicine at Stanford University, Stanford, California
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]
Coulter and CASY counters are much cheaper than flow cytometers, and for applications that require cell numbers and sizes, such as cell-cycle research, they are the method of choice. Its advantage over the methods above is the large number of cells that can be processed in a short time, namely: thousands of cells per second.
Behring Diagnostics, a Frankfurt-based [1] company bearing Dr. Emil von Behring's name, was spun off from Hoechst AG (which later became Aventis) in 1995.Soon after its formation, the company acquired a drug-testing firm called Syva Company and, in 1996, the diagnostics and clinical chemistry division of DuPont.
Using the Bausch & Lomb Spectronic 20 Colorimeter, 1962. 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.