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Related Experiment Videos

Flow cell modification of a filter fluorimeter producing improved throughput and precision

K Spencer, I T Sutherland, C P Price

    Annals of Clinical Biochemistry
    |January 1, 1977
    PubMed
    Summary

    This study improved a fluorimeter by adding a Hellma flow cell, enhancing precision and throughput for faster, more accurate analysis. The new setup allows for over 70 analyses per hour with superior results compared to the standard cell.

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    Area of Science:

    • Analytical Chemistry
    • Biochemistry

    Background:

    • Standard flow cells in fluorimeters can limit analytical throughput and precision.
    • Continuous flow fluorimetric methods are widely used for various analyses.

    Purpose of the Study:

    • To describe a modification of a Corning-EEL 244 filter fluorimeter using a Hellma fluoronephelometric flow cell.
    • To compare the performance characteristics of a standard flow cell versus the Hellma flow cell.

    Main Methods:

    • Modification of a Corning-EEL 244 filter fluorimeter to incorporate a Hellma fluoronephelometric flow cell.
    • Comparative analysis using a continuous flow fluorimetric calcein-calcium method.
    • Evaluation of precision, carryover, and throughput rates.

    Main Results:

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    • The Hellma flow cell modification significantly improved precision and reduced carryover.
    • Analytical throughput increased to over 70 samples per hour with the Hellma cell, surpassing the standard cell's performance at 40 samples per hour.
    • Curve regeneration of signals was possible with the Hellma flow cell, further increasing analytical rates.

    Conclusions:

    • The Hellma flow cell offers a substantial upgrade for fluorimetric analysis, enabling higher precision and throughput.
    • This modification is particularly beneficial for high-speed, sensitive analytical applications.
    • The ability to perform curve regeneration adds further efficiency to analytical workflows.