Seca Q-Trace Gold 5500 ECG Electrodes (Pack of 500) A combination of high quality adhesive and high-conductive properties make these Seca Q-Trace Electrodes our ‘gold standard’ disposable ECG electrodesures and Benefits Disposable Resting ECG electrodes with silver / silver chloride (Ag / AgCl) contact Manufactured by Tyco Healthcare Single use Supplied in sachets, each containing 100 electrodes