In-Situ TROLL 9500 Multi-parameter Water Quality Sonde

  • Proven accuracy

    Third party verification guarantees accurate measurements
  • Internal Memory

    4MB or 1million readings, perfect for remote applications
  • 9 sensors housings

    For simultaneous multi parameter measurements
  • In-Situ TROLL 9500 Multi-parameter Water Quality Sonde

The 9500 is equipped to house up to nine individual sensors capable of measuring ten parameters including:  temperature, pressure, pH, turbidity, conductivity, dissolved oxygen, oxidation reduction potential (ORP), ammonium, chloride and nitrate.

The In-Situ TROLL 9500 is ideal for remote applications due to its onboard power and durable construction. The 9500 features two internal batteries, and is also equipped for 9-12V DC external power. The sonde enclosure is robust, rated to IP68 and constructed out of durable stainless steel, PVC and acetal. 


  • Corrosion resistant IP68 housing
  • Field replaceable sensors for easy maintenance and calibration
  • Compatible with both internal or external power sources
  • Lightweight at only 1.9 kg
  • SDI-12 output

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