HI98165 Professional Portable Cheese pH Meter
HI98185 pH / ORP / ISE / °C Meter + PC Interface, Waterproof
HI98191 Portable ISE Meter with ISE electrode (Configurable)
HI98191 Waterproof Portable pH/ORP Meter
HI98192 Waterproof Portable EC/TDS/Resistivity/Salinity Meter
HI98193 Waterproof Portable Dissolved Oxygen and BOD Meter (4 or 10m cable)
