Introducing the TROLL 9500--multi-parameter water quality monitoring made simple! The TROLL 9500 is a powerful portable unit that houses up to 9 water quality sensors, internal power, and optional data logging capabilities.

Lower Total Cost of Ownership
The TROLL 9500 saves time and money with convenient features like Quick-Calibrations, automated Low-Flow sampling, field-replaceable sensors, long-lasting internal power, and more. Our field-proven Optical D.O. sensor (RDO™) reduces maintenance and the need to visit the site.

Higher Reliability
The TROLL 9500 features a corrosion-resistant housing that is suitable for fresh, waste, and marine waters. The battery compartment and cable connector are IP67 rated even when detached. Sensors are field replaceable for easy maintenance and calibration.

Proven Accuracy
A factory report using NIST-traceable standards where applicable is included with each unit. Rigorous, independent 3rd-party validation proves the Optical D.O. (RDO) is the most accurate and rugged sensor in the industry.

Easy Operation
The TROLL 9500 features innovations like Quick-Cal solutions, Twist-Lock connectors, and user-friendly software that make your job easier.

LTS
LTS stands for “Level, Temperature, and one additional Sensor” such as conductivity, pH, or dissolved oxygen. This version also includes internal data logging. It can be used for coastal applications or to measure ground water quality over time.

Profiler
Ideal for water quality sampling or profiling. The Profiler allows for any of the key water parameters such as pH, ORP, D.O., conductivity/salinity, temperature, depth. Memory is not included, but data can be logged to a RuggedReader or a PC.

Profiler XP
The Profiler XP offers the same features as the ‘Profiler’ unit, but with the option to use XP or “Extended Parameter” sensors, such as turbidity, ammonium, nitrate, and chloride.

Professional
This version offers the highest value for most applications allowing for all the key parameters similar to the ‘Profiler’ PLUS internal data logging for recording trends over time.

Professional XP
The most capable TROLL 9500 that offers the same features as the ‘Professional’ unit, but with the option to use XP or “Extended Parameter” sensors, such as turbidity, ammonium, nitrate, and chloride.