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Related Experiment Videos

Amplifier design considerations for blood cell counter sampling probes.

C D Ferris, B L Veal

    ISA Transactions
    |January 1, 1986
    PubMed
    Summary

    Electrical noise significantly impacts Coulter principle blood cell counters, leading to inaccurate counts. A new integrated circuit design minimizes noise, improving counting accuracy in clinical laboratories.

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    Area of Science:

    • Biomedical Engineering
    • Clinical Laboratory Science

    Background:

    • Coulter principle cell counters are sensitive to electrical noise from the electrolyte and probe.
    • Environmental noise (up to 60 Hz) and gas bubble generation from electrolysis further degrade signal quality.

    Purpose of the Study:

    • To discuss current signal acquisition methods and challenges in clinical blood cell counting.
    • To introduce a novel design using integrated circuits to overcome noise limitations.

    Main Methods:

    • Analysis of existing signal acquisition techniques for Coulter counters.
    • Development and implementation of a new circuit design utilizing integrated components.

    Main Results:

    • The novel design effectively eliminates many noise-related problems inherent in traditional bench-type counters.
    • Performance characteristics of the new signal acquisition circuitry are detailed.

    Conclusions:

    • The proposed integrated circuit design offers a significant improvement for blood cell counting accuracy.
    • This advancement addresses critical noise issues, enhancing reliability in clinical laboratory settings.

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