Even for 1-lead electrocardiography (ECG). single-use gel conductive electrodes are employed in a clinical setting. However. gel electrodes show limited applicability for long-term monitoring due to skin irritation and detachment. https://www.nacrack.com/amazing-price-1997-2000-BMW-528I-Front-Bumper-Reinforcement-Bar-Used-Original-Exterior-OEM-great-save/