The YSI ProQuatro is a portable multiparameter handheld for field and lab water quality sampling. It measures combinations of dissolved oxygen, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, ammonium, nitrate, chloride, and temperature, and is suitable for drinking water and wastewater compliance work using EPA-approved methods. With a 4-port Quatro cable, four sensors can be run simultaneously.

• Measures DO, conductivity, salinity, TDS, pH, ORP, ammonium, nitrate, chloride, and temperature
• IP-67 waterproof, floats, and drop-tested to 1 meter with rubber over-molded case
• Stores 5,000 datasets with 50 data IDs; USB port for data export
• Approximately 80 hours of continuous battery life on two alkaline C-cells
• Backlit display with glow-in-the-dark keypad for low-light use
• Field-replaceable cables (1-30 m) and interchangeable sensors
• 3-year instrument warranty, 2-year cable warranty

Technical Specifications

Rental equipment — pricing confirmed by phone. Submit a request with your dates and we'll call you within 1 business day.