Horiba Laqua 6582S 10C Potassium Ion Electrode (Combination) Part# 3200697409 0.45 Micron a PC Interface Cable connects a PC Interface Cable connects to the L5 Direct Read Cable for communication with the PC—no need to remove the datalogger from the well mmHg Level: in Accessories and Solutions 7682S Potassium Ion Electrode Tip 500 K IFS Potassium Ion Electrode Filling Solution (500ml) 500 K SL 100 mg L Potassium Ion Standard Solution (500ml) 500 K SH 1000 mg L Potassium Ion Standard Solution (500ml) 500 K ISA Potassium Ionic Strength Adjustor (500ml The Horiba Laqua 6582S 10C Potassium Ion Electrode (Combination) is an Ion Selective Electrode the reference electrode and ion sensing electrode are built in one body