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EMG electrode-electrolyte noise

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  • EMG electrode-electrolyte noise

    Hello to you all!

    For many years I have used theSensorMedics miniature skin electrodes ref 650
    414 with the recommended electrolyte from TECA ref 201 210. The trio
    electrode-electrolyte-skin interfaces had a stable impedance. =20
    Recently the compositionof the electrolyte, even if the reference are
    identical, has been changed. The actual electrolyte is made by Vickers
    Medical for TECA the old one was made by Numelec. It reveals to be more
    unstable with time, its consistency makes difficult to fill the electrode
    small well without introducing air bubble.

    Does any one have already done impedance and capacitance measurements with
    these electrodes and this electrolyte while applied on the skin?

    Can someone recommend a better "cream"? It must be transparent to check for
    the bubbles introduced into the well while filling with electrolyte.

    As usual all the answers will be posted

    Thanks for your help,

    Yves Blanc
    Laboratoire de cinesiologie
    Hopital cantonal Universitaire=20
    1211 GENEVE 14
    fax XX 41 22 37 27 799 =20
    Blanc Yves
    Laboratoire de Cin=E9siologie
    Hopital cantonal Universitaire
    1211 GENEVE 14 suisse
    Fax xx 41 22 / 37 27 799