Hydrolab MiniSonde

Hydrolab MiniSonde



Engineered for dependable performance and durability in the field, the Hydrolab Minisonde 5 (MS5) offers a compact and lightweight multiprobe design for either profiling or unattended long term monitoring.

With a diameter of only 45mm (1.75”) the MS5 is perfect for the monitoring of 50mm (2”) environmental monitoring wells.


  • Spot check water chemistry analysis.
  • Unattended monitoring of boreholes & waterways.
  • Open water profiling of lakes and marine environments.
  • Can be used in conjunction with remote solar powered telemetric system.

Features & Benefits

Packed full of features the MS5 can measure up to ten parameters simultaneously. Is is also capable of measurements using LDO optical sensor technology (i.e. DO, Turbidity, Chlorophyll a, Blue-Green Algae, Rhodamine WT).

  • Blue Green Algae
  • Chlorophyll a
  • Conductivity
  • Depth / Vented Level
  • Dissolved Oxygen
  • Ion-Specific Electrodes (Ammonia, Ammonium, Nitrate, Chloride)
  • ORP (Redox)
  • pH
  • Rhodamine WT
  • Surveyor 4a
  • Temperature
  • Total Dissolved Gas
  • Turbidity

Technical Specifications

Product Specification Description
Size Outer diameter – 4.4cm (1.75”)Length – 53.3cm (21”)

Length (with battery pack) – 74.9cm (29.5”)

Weight 1.0kg (2.2lbs)(with battery pack) – 1.3kg (2.9lbs)
Computer interface RS-232, SDI-12, RS-485
Memory 120,000 measurements
Battery supply 8 AA batteries
Operating temperature -5 to 50° C
Maximum depth 225m

Calibration Videos and Tips