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YSI ProQuatro Handheld & Accessories

The ProQuatro handheld multiparameter meter measures a variety of combinations of dissolved oxygen, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature. Also a very powerful lab instrument for BODs, pH and ORP. 

Combine 4 sensors on a single cable for comprehensive multiparameter sampling to measure temperature/conductivity, DO, and any two ISEs among pH, ORP, ammonium, chloride, or nitrate. Pairing the ProQuatro with the 4-port cable creates an extremely powerful handheld multiparameter water quality instrument.  The Mil-spec connectors, rubber over-molded case, scratch-resistant lens come with a 3-year warranty, and a 2-year cable warranty.

The ProQuatro has a new USB feature to allow for on-the-go data documentation. Cable options range from 1-, 4-, 10-, 20-, and 30-meter choices (up to 100-meters on DO only cables). YSI6950 is the handheld ONLY, select from the additional part numbers for optional sensors, cable assemblies, and accessories. 

ProQuatro vs Pro Plus

ProQuatro Specification Sheet

ProQuatro Order Guide

ProQuatro User Manual 

Part Number