Pro Series Handhelds

The YSI portable Pro probes include a pH/ORP probe (Pro10), dissolved oxygen probe (Pro20), conductivity/salinity/TDS probe (Pro30), pH/ORP/dissolved oxygen probe (Pro1020), pH/ORP/conductivity/salinity/TDS probe (Pro1030) and the dissolved oxygen/conductivity/salinity/TDS probe (Pro2030). 

All these Pro probes also measure temperature. These handheld meters are very robust, IP-67 waterproof, have Mil-spec connectors and can withstand impact (1 m drop resistant), enabling years of measurements in even harsh field conditions. 

With the Pro20, Pro1020 and Pro2030 you can choose between a polarographic and galvanic sensor as oxygen sensor.