HI 3619D ORP Electrode for General Laboratory Use ORP electrode for use with general laboratory use and disinfection.  Recommended for use with HI 98140, HI 98150, HI 98230 and HI 98240 pH meters. Read More »

HI 1610D   pH Electrode for General Laboratory Use pH electrode for general laboratory use. Read More »

HI 1615D pH Electrode for General Laboratory Use pH electrode designed for general use in the laboratory.  Recommended for use with HI 98140, HI 98150, HI 98230 and HI 98240 pH meters. Read More »