The YSI ProDSS water quality meter measures water parameters such as DO (optical Dissolved Oxygen), pH, ORP, conductivity, temperature and turbidity. Designed for demanding field work the YSI ProDSS is the latest, smartest, most innovative portable water quality multi-parameter instrument from the YSI stable.

Contact Van Walt


The YSI ProDSS Water Quality Meter can measure parameters like DO (optical Dissolved Oxygen), pH, ORP, conductivity, specific conductance, salinity, TDS, resistivity, chloride, nitrate, depth, temperature and turbidity. The YSI ProDSS takes the advanced technology from the EXO series to make the best handheld available. This water quality monitoring instrument is rugged and reliable with intelligent, user-replaceable digital sensors that can be connected to any port and that are automatically recognised by the instrument and retain the calibration data. With optional GPS and depth the YSI ProDSS is completely customisable and with military specification connectors, IP67 waterproof, rubber over-moulded case and 1-metre drop tests, durability is ensured for longevity of sampling even in the harshest field conditions.

  • Smart, cost-effective and adaptable for the future.
  • High-impact body is built to record water quality parameters to depths of 250 meters.
  • Data is stored on-board the instrument for downloading to a laptop on completion of the monitoring sequence
  • YSI pedigree
Read More

YSI ProDSS Equipment Options:




The YSI ProDSS is configured for you and the cables and probes/sensors can be selected according to your requirements. All rental instruments will be configured/calibrated to measure temperature/conductivity, DO, pH, ORP and turbidity.

3/8 inch and 1/4 inch fittings
Lubricant and instructions
Calibration and Storage Cup
Replacement assembly includes: calibration cup, sleeve, and seal
ProDSS ODO Optical Dissolved Oxygen Sensor: Titanium user-replaceable digital smart sensor
ProDSS Turbidity Sensor
ProDSS Conductivity and Temperature Sensor
ProDSS pH Sensor with Module
ProDSS pH/ORP Sensor with Module
ProDSS Nitrate Sensor with Module
ProDSS Ammonium Sensor with Module
ProDSS Chloride Sensor with Module
Calibration Solutions
Conductivity Calibrator Solution
pH Buffer
Zobell Solution, ORP Calibrator
Turbidity Standard
Ammonium Standard
Nitrate Standard
Ammonium Calibration Solution
5580 Confidence Solution (case of 6 pints)


Related Equipment

Nitrate Sensor

Real-time, continuous monitoring of nitrates with sensor to desktop data. Developed for everyday use, our Nitrate Sensor is accurate and affordable so ideal for environmental, agricultural and industrial...

Read More

Stainless Steel Bomb Sampler

A Stainless-Steel Bomb Sampler for the collection of liquid samples from the top, bottom or any level in tanks or bodies of water. Extensions can be added to sample above the sludge layer.

Read More


The YSI EXO Sonde is a high accuracy water quality monitoring platform.  Measures & logs: pH, EC, Temperature, Redox, DO & Turbidity simultaneously. When connected to telemetry, it will also report...

Read More

Have a question for Van Walt?

Please complete the form below; a member of our team will contact you shortly

Oops! Something went very wrong. Please refresh and try again...