Covidien Kendall electrodes are made of the highest quality materials, to exacting standards for increased performance and reliability. All of Kendall's electrodes are made to comply with industry standards to ensure that their electrodes will perform under all monitoring conditions. All products utilize a patented conductive adhesive hydrogel which provides firm adhesion, repositionability and low impedance for clear, reliable tracings as well as minimizing adhesive residue to facilitate patient clean up. All products are defibrillation recoverable and are latex-free. large surface area Kendall hydrogel for strong adhesion and readings Latex-free, DEHP free, mercury free Compatible with all machines