YSI ProDSS pH sensor with replaceable module attached; combination glass bulb electrode, Ag/AgCl reference electrode with gelled electrolyte; 1, 2 or 3 point calibration; 100m maximum depth .

YSI's ProDIGITAL handheld systems are the industry leader for nearly any water quality application - surface water, groundwater, coastal waters, aquaculture, wastewater, or wherever your testing takes you.

The ProDSS, ProSwap, and ProSolo systems all feature rugged instruments, smart sensors, reliable cables, and powerful data management for optimal performance.