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HYDROLAB water quality instruments and software help environmental scientists and managers monitor the increasingly important changes in our water resources by providing continuous water quality data, reliability, and usability you can trust.

The new HL7 multiparameter sonde maximizes deployment life, minimizes maintenance, and provides unmatched ease of use producing comprehensive and valuable data sets supported by metadata.

HYDROLAB sondes include intuitive software for unmatched usability, exceptional power performance and proven sensor options, all delivering high data quality and reliability.


Designed for long-term continuous monitoring, reliability, and usability

  • Up to nine sensor options, including central cleaning brush for prolong deployments
  • External or battery powered with typical battery life of more than 90 days


Lightweight, portable and flexible, perfectly suited for spot monitoring and short term studies

  • Up to six sensor options, including temperature
  • Compact size easy to carry and fit inside 2” wells / pipes
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Simple and intuitive guided software

This powerful software tool helps to make better decisions, minimize errors, and increases efficiency in the lab and on the deployment site.

  • Quickly view the current status of the instrument and ensure its working properly
  • Maximize uptime with streamlined calibration tasks
  • Plot current and historic data with multiple graphics and table formats options

HL Sensors

Proven sensor technology

Sensor options: Temperature, Conductivity, pH/ORP, Hach LDO (Luminescent dissolved oxygen), Turbidity, Depth, Chlorophyll a, Blue green algae, Rhodamine, Ammonium (Ion Selective Electrode),  Nitrate (Ion Selective Electrode), Chloride (Ion Selective Electrode)

HL7 Video

HL4 Video

HL Series Brochure

Water Quality Monitoring Instruments for:

  • Lake and Reservoir profiling
  • River and Stream surveys
  • Coastal monitoring
  • Groundwater studies
  • Wetland management
  • Harbor and Port investigations
  • Aquaculture protection
  • Dredging management
  • Effluent discharge regulation
  • Agricultural run-off
  • Ecosystem assessment programs

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