Coulter Counter Model B Cell Counter
- 1960s
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Small JPG1200 x 982px — 89.7 KBLarge JPG2880 x 2357px — 374 KBFull-sized JPG3170 x 2594px — 436 KBOriginal fileTIFF — 3170 x 2594px — 23.6 MBBased on the Coulter principle, the Coulter Counter quantifies and sizes particles suspended in a fluid, like blood cells, bacteria, and a wide variety of other substances. The instrument works by drawing liquid containing the particles through a channel, where each particle releases an electrical charge that is measured and counted. The Coulter principle was discovered by Wallace H Coulter in the late 1940s and patented in 1953. The Coulter counter was manufactured by Coulter Corporation until 1997, when the company was acquired by Beckman Instruments and became known as Beckman Coulter, Inc.
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Cite as
“Coulter Counter Model B Cell Counter,” 1960–1969. Beckman Historical Collection, Box 58, Folder 93. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/z890rt694.
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