DIY: Electrode Gel

DIY: Electrode Gel
••• katrinaelena/iStock/GettyImages

Electrode gel is essential when a doctor wants to apply electrodes to skin to read electrical impulses in the body. Whether you are interested in reading brain waves in an electroencephalogram-based study, or you want to record a prenatal electrocardiogram, electrode gel is vital. Without it, electrical impulses in the body cannot be recorded clearly. It is easy and cheap to make your own electrode gel. It is also a good idea to know how to make your own if you ever run out and you need a substitute in a hurry.

    Squirt about 100 ml of aloe vera gel into the plastic resealable container.

    Add one tablespoon of salt and stir the mixture until the salt dissolves completely. With the addition of salt, the gel is now conductive.

    Read the conductivity of the electrode gel by placing the two electrodes of the multimeter about one inch apart in the gel. If the resistance of the gel is too high for your purposes, add more salt.

    Things You'll Need

    • Multimeter
    • Salt
    • Aloe vera gel
    • Plastic resealable container
    • Stirring utensil

    Tips

    • Add a small amount of gentle detergent or shampoo when using electrodes on oily skin (e.g. a scalp).

    Warnings

    • If you use an oil-based gel, the salt won't dissolve.

Related Articles

What Is the Function of Tracking Dye in Gel Electrophoresis?
List of the Applications of Electrophoresis
How Electrophoresis Works
Science Experiment to Test Electrolyte Levels in Sports...
Sources of Error in Gel Electrophoresis
How to Extract DNA From Oranges
How to Test for Sodium Bicarbonate
How to Make a Capacitor
How to Test Electrical Conductivity
The Purpose of the Buffer in Electrophoresis
Fun Science Experiments With Potatoes
Where are Lipids Located in the Body?
How to Dye Crystals
How to Make a Homemade Incubator for Duck Eggs
DNA Extraction by Spooling Method
How to Clean Water
How to Make Skim Milk Agar Plates
Science Project on Electricity in a Potato

Dont Go!

We Have More Great Sciencing Articles!