Multiparameter Water Quality Sonde with 4 sensor ports and optional depth sensor

EXO Multiparameter Sondes — the best-in-class platform for the highest quality data. EXO’s dynamic range of smart sensors provides comprehensive multiparameter water quality data while SmartQC ensures proper calibrations and top sensor performance. You can be confident in your extended deployments thanks to EXO’s tough materials and unmatched anti-fouling technology.

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Go more places with the EXO1s sonde!
The more maneuverable monitoring platform.

EXO1s is a compact, batteryless sonde that comes with the same warranty and capabilities as the EXO1, and is ideal for specialized applications such as:

  • Attachment to an AUV or aerial drone
  • Integration with a buoy
  • Horizontal profiling where lightweight is optimal

What’s in the Box:

  • EXO1s Sonde
  • Probe Guard
  • Calibration and Storage Cup
  • Removable Bail
  • USB Drive (contains Kor Software)
  • Maintenance Kit (port plugs, o-rings, lubricant)

Key Benefits

  • Highest Data Quality
    Onboard monitoring systems verify sensor operation
  • Multiparameter Monitoring
    4 universal ports allow for any combination of smart sensors or the central wiper
  • Industry-leading Anti-fouling
    Best-in-class wiper technology
  • Titanium Components
    The toughest grade parts guarantee operation well into the future
  • Seamless Integration
    EXO can plug and play into marine, estuarine, freshwater, and groundwater monitoring systems

Discover how less size can bring more value to your science with the following benefits:

  • Take off the strain, with a 30% reduction in weight.
  • Go new places, with a 33% reduction in length.​
  • Explore your environment, with AUV’s or drones.
  • Expand your integrated system, and maximize your limited space.
  • Lose the Alkalines, and save on maintenance.

Smart Sondes and Sensors
EXO is an extremely versatile instrument, allowing the user to automatically configure a sonde with different sensors for different applications in minutes


Smart Sensor Options:

  • Conductivity/Temperature (wiped and non-wiped)
  • Dissolved Oxygen
  • fDOM
  • ISEs (Ammonium, Chloride, and Nitrate)
  • pH (guarded and unguarded)
  • pH & ORP (guarded and unguarded)
  • Rhodamine
  • Total Algae (Chlorophyll + Phycocyanin and Phycoerythrin)
  • Turbidity

Other Available Parameters

  • Absolute Pressure
  • Ammonia
  • Depth
  • DO% Local
  • Guage Pressure
  • nLF Conductivity
  • PAR
  • Resistivity
  • Salinity
  • Specific Conductivity
  • Total Dissolved Solids
  • Total Suspended Solids
  • Water Density

EXO sondes and sensors are tested in a variety of rigorous field conditions as well as lab conditions to ensure accuracy and response times.

Monitor without Interruption
No matter which EXO sensors users select, other features of the smart sensor design make them rugged and durable:

  • Wet-mateable connectors resist corrosion
  • Isolated components prevent short circuits
  • Welded housings and double o-rings prevent leaks
  • High-impact plastic and titanium resists breaking
  • Built-in anti-fouling systems protect data integrity
  • Low power consumption extends underwater deployments