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We recommend buying several spare sets of these electrodes at purchase. They should be sterilized and washed regularly.
The electrodes are made of inert metal, and wash well. However the white Velcro will discolor over time, and look worn.
SIDEBAR: These are snap-on electrodes with a Velcro band. They work well and take almost no time to attach. [be sure to attach to the mid-phalange to get the best signals].
However you are not restricted to these Velcro-banded electrodes. You may substitute any of our snap-on pellet disposable electrodes and tape them to the skin as an alternative to using these Velcro electrodes.