Hi Joseph,

First, scoop as much of the gel away from the electrodes using a cotton swab.

Second, dip another cotton swab in 70% isopropyl alcohol, and cleanse the electrode sensors.

It's extremely important to thoroughly dry the sensors since the sensors are very corrosive. Reusable sensors typically last for only one or two years if you use them every day. If you have some budget, I recommend using pre-gelled disposable electrodes that are free from this hassle.

Good luck with your experiment!

Best,

Hanjoo