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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.  Its compact housing fits into 2” wells or other limited space applications.

  • 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
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  • Four universal sensor ports that allow custom configuration
  • Measures up to 10 parameters simultaneously (Some sensors provide multiple parameters)
  • Compact and lightweight 1.75” diameter housing fits into 2” wells or other limited space applications
  • Flexible design for use in either profiling or long-term deployments
  • Capable of measurements using Hach LDO and an additional optical probe.


Hydras 3 LT - EN
Hydras 3 LT Pocket - EN
Hydraulic Fracturing Water Analysis App Note
Hydrolab Series 5 Firmware
Hydrolab Standard Methods Sheet
Leaflet - Multiparameter-Sonde Water Quality Hydrolab DS5 / DS5X / MS5
Lealflet - Application Software OTT Hydras 3 LT Pocket
Quick Start Application Software OTT Hydras 3 LT
Surveyor Handheld Maintenance
User Manual Application Software OTT Hydras 3 LT Pocket
USER MANUAL Hydrolab DS5X, DS5, and MS5 Water Quality Multiprobes
Water Quality Solutions Overview Video
Whitepaper: Turbidity measurements
Turbidity Whitepaper
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Sensors Measures up to 10 parameters simultaneously
Internal 8 AA batteries (with available internal battery pack option)
Communications RS-232, SDI-12, RS-485
Memory Up to 120,000 measurements
User Interface
PC Software Hydras3 LT
Pocket PC Software (Optional) TDS Recon with Hydras 3 LT Pocket
Sonde Depth Rating 200 m (656 ft)
Diameter 4.4 cm (1.75 in.)
Weight 1.0 kg (2.2 lb) (typical)
Weight with battery pack 1.3 kg (2.9 lb) (typical)
Lenght 53.3 cm (21 in.)
Lenght with battery pack 74.9 cm (29.5 in.)
Environmental conditions
Operating temperature -5 ... 50 °C (23 ... 122 °F), non-freezing
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