Cardinal Health Kendall Medi-Trace™ 200 Series Foam EKG Electrodes (31050522) - MEDI-TRACE™ 200 series electrodes are a cost effective general adult monitoring electrode. The foam substrate repels fluids and conforms to body contours. The MEDI-TRACE™ 200 series electrodes have a smaller footprint for convenient lead placement and a teardrop shape for easy removal from the liner and patient. The patented conductive adhesive hydrogel is designed to stay fresh up to 45 days out of the package. Solid gel. Size: 1-1/2" Diameter. 100/PK, 10PK/CS. Price per Pack.