“All-in-One” electrodes offer versatility and customization. These electrodes combine the pH reference, pH half-cell, and temperature sensor in one 12mm-diameter electrode body. The seven designs allow you to select between low-maintenance, sealed electrodes or clog-resistant refillable electrodes. Tuff-Tip electrodes feature a semi-domed tip which protects the pH bulb and ensures a quick response in harsh and dirty samples. PBR-style electrodes provide predictable, reliable, and quick responses—no matter what the sample temperature. This design virtually eliminates drift, accuracy problems, and premature performance losses due to temperature. All electrodes include 3-ft cable and BNC connector for pH, except where noted. Beckman Instruments-compatible electrodes feature a 30K temperature compensator with a 3.5mm audio plug for connecting to your meter.