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Coulter counter |
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counter /coun·ter/ (koun´ter) an instrument to compute numerical value; in radiology, a device for enumerating ionizing events.
Coulter counter an automatic instrument used in enumeration of formed elements in the peripheral blood. Geiger counter , Geiger-Müller counter an amplifying device that indicates the presence of ionizing particles, particularly β particles. scintillation counter a device for detecting ionization events, permitting determination of the concentration of radioisotopes in the body or other substance.
Coulter counter [kōl′tər] Etymology: W.H. Coulter, twentieth century American engineer trademark for an electric device that rapidly identifies and counts red and white blood cells present in a small specimen of human blood. counter [kown´ter] an instrument or apparatus by which numerical value is computed; in radiology, a device for enumerating ionizing events. Coulter counter an automated instrument for performing blood counts, based on the principle that cells are poor electrical conductors compared with saline solution. Geiger counter (Geiger-Müller counter) a radiation counter using a gas-filled tube that indicates the presence of ionizing particles. It is very sensitive to β particles but relatively insensitive to γ and x-rays. scintillation counter a device for detecting ionization events, permitting determination of the concentration of radioisotopes in the body or other substance.
Coulter counter an instrument that counts particles in a fluid medium by electronic means. Can be calibrated to count cells in milk or a blood sample. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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