Compatible with the following OHAUS pH Meters: Conductivity Meter ST300C (Cat#41-903) ; Conductivity Meter ST3100C-B (Cat#41-1004) ; Conductivity Meter ST3100C-F (Cat#41-1005) ; Multi-Parameter Analyzer ST3100M-B (Cat#41-1009) ; Multi-Parameter Analyzer, ST3100M-F (Cat#41-1010) ; Multi-Parameter Analyzer, ST3100M-N (Cat#41-1011)

Compatible with the following OHAUS Electrodes: Conductivity Electrode STCON3(Cat#41-2014) ; Conductivity Electrode STCON7 (Cat#41-2015)