Water quality
From long term unattended monitoring to spot sampling, Hydrolab multiparameter sondes offer rugged and flexible options for water quality measurement. Choose from compact options for easy spot sampling or groundwater measurement to the larger, more robust Datasondes for more diverse sensor options and anti-fouling options.
Hydrolab HL4 Multiparameter Sonde
New Hydrolab Platform: Reliability, Ease-of-use, Metadata
The Hydrolab HL4 is the next generation multiparameter water quality sonde from OTT Hydromet. Its reliability, ease-of-use, and metadata produce water quality data you can trust.
- Attended, Unattended
- Temperature, Conductivity, Depth, pH, Dissolved Oxygen (LDO), Turbidity, ORP
- The next generation multiparameter water quality instrument
- SDI-12, RS-485, RS-232, TTY, USB
Hydrolab DS5 - Multiparameter Data Sonde
Water Quality Sonde with Flexible Sensor Payload
Hydrolab DS5 multiparameter water quality sonde offers the most Hydrolab sensors on a multiparameter platform for either profiling or unattended monitoring.
- Attended, Unattended
- Temperature, Conductivity, Depth, pH, Oxygen Reduction Potential (ORP), Dissolved Oxygen (LDO), Dissolved Oxygen (Clark Cell), Turbidity, Chlorophyll a, Blue-Green Algae, Rhodamine WT, Ammonium, Nitrate, Chloride, Total Dissolved Gas (TDG), Ambient Light
- The Hydrolab sonde with the most available sensors
- SDI-12, RS-485, RS-232, TTY
Hydrolab MS5 - Mulitparameter Mini Sonde
Lightweight multi-probe with four ports available for water quality sensors
The Hydrolab MS5 multiparameter water quality sonde offers a selection of Hydrolab sensors on a compact and lightweight multiprobe designed for either profiling or unattended monitoring.
- Attended, Unattended
- Temperature, Conductivity, Depth, pH ,ORP, Dissolved Oxygen (LDO, Clark cell), Turbidity, Chlorophyll a, Blue-Green Algae, Rhodamine WT, Ammonium, Nitrate, Chloride , TDG
- The Hydrolab sonde profile for a smaller sensor payload that will fit in a two-inch well
- SDI-12, RS-485, RS-232, TTY
Hydrolab Quanta Multi-Probe Meter
Multiparameter sonde for basic water quality spot measurements
For basic water quality spot measurements the Hydrolab Quanta multiparameter water quality sonde offers Hydrolab's sensor technology in a complete, cost-optimized system package that includes an easy-to-use handheld display.
- Attended
- Temperature, Conductivity, Depth, pH, Oxygen Reduction Potential (ORP), Dissolved Oxygen (Clark Cell), Turbidity
- The Hydrolab sonde for basic spot measurements
- SDI-12
Hydrolab Quanta G Multi-Probe Meter
Basic water quality sensors for spot measurements in groundwater wells
For basic water quality parameter spot measurements in groundwater wells, the Quanta-G offers Hydrolas sensor technology in a complete stainless steel package that includes an easy-to-use, handheld display.
- Attended
- Temperature, Conductivity, Depth, pH, Oxygen Reduction Potential (ORP), Dissolved Oxygen (Clark Cell)
- The Hydrolab sonde for basic spot measurements that will fit in a two-inch well
- SDI-12
Sea-Bird Scientific SUNA Optical Nitrate Sensor
High accuracy in-situ nitrate measurement
The Sea-Bird Scientific SUNA V2 UV nitrate sensor with technology by Satlantic is the ultimate chemical-free solution for autonomous monitoring in estuarine and freshwater environments.
- Attended, Unattended
- Nitrate
- High-accuracy, chemical-free, in-situ nitrate measurement
- SDI-12, RS-232
Sea-Bird Scientific WQM
Water Quality Monitor for Maximum Deployment Times
The Sea-Bird Scientific WQM X with technology by Sea-Bird Electronics and WET Labs is designed specifically for long-term moored operations in biologically rich water.
- Unattended
- Conductivity, pressure, chlorophyll, temperature, dissolved oxygen, turbidity
- Designed specifically for extended deployment in biologically rich waters
- RS-232
Sea-Bird Scientific HydroCAT
For longterm water quality monitoring with proven anti-fouling technology
The Sea-Bird Scientific HydroCAT with technology by Sea-Bird Electronics (SBE) is ideally suited for extended deployments in remote, biologically rich environments.
- Unattended
- Temperature, Pressure, Dissolved Oxygen, Conductivity
- Ideally suited for extended deployments in remote, biologically rich environments
- SDI-12, RS-232, RS-485 (optional)
Hydrolab DS5X - Multiparameter Data Sonde
Water Quality Sonde for Maximum Deployment Times
Hydrolab DS5X multiparameter water quality sonde offers the most Hydrolab sensors on a multiparameter platform especially designed for longterm unattended monitoring
- Attended, Unattended
- Temperature, Conductivity, Depth, pH, Oxygen Reduction Potential (ORP), Dissolved Oxygen (LDO), Dissolved Oxygen (Clark Cell), Turbidity, Chlorophyll a, Blue-Green Algae, Rhodamine WT, Ammonium, Nitrate, Chloride, Total Dissolved Gas (TDG), Ambient Light
- The Hydrolab sonde with the most available sensors and a central cleaning system to minimize fouling
- SDI-12, RS-485, RS-232, TTY








