Apera Instruments 2401T-F Conductivity Electrode (K=1. 0) is designed for high-accuracy laboratory conductivity measurements. Its cavity structure and platinum chip sensor design enhance the accuracy and stability of conductivity measurement in the range of 0 to 200mS/cm. The glass body is resistant to all kinds of general chemical corrosion. 3Ft cable length. BNC/RCA connector. The temperature probe is built inside. 3Ft cable length. This electrode is compatible with Apera EC800, EC820, PC800, PC820, EC910, PC910, EC950, PC950, EC9500, PC9500.