Disposable ECG Electrodes is used for diagnostic ECG or ECG monitoring. They can be used for various ECG tests. CHUNFENG? Disposable ECG Electrodes uses an Ag/AgCl sensor element and solid conductive & adhesive Hydro-gel for adhesion. The Ag/AgCl sensor element has the best sensitivities and the solid conductive & adhesive hydro-gel has very low impedance and is non-irritating, non-sensitizing and non-cytotoxic to the skin. All electrodes are Latex free.