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electrical impedance
The change in electrical resistance across an aperture when a particle in a conductive liquid passes through.
The Coulter automated hematology analyzer is an example of a laboratory instrument using electrical impedance to enumerate leukocytes, erythrocytes & platelets in the complete blood count (CBC).
Related
electrical resistance
General
impedance
References
Clinical Diagnosis & Management by Laboratory Methods,
19th edition, J.B. Henry (ed), W.B. Saunders Co.,
Philadelphia, PA. 1996, pg 63