Related Documentation

TROLL 9500 Water Quality Instrument Specifications
TROLL 9500 Quick Start Guide
TROLL 9500 Manual

TROLL 9500 Multiparameter Sonde

Custom multiparameter sonde with internal power and data logging.

The TROLL 9500 Multiparameter Sonde is a customizable water quality instrument that houses up to nine sensors, with optional internal power and logging capabilities for continuous groundwater and surface water monitoring.

Unlike membrane-based Clark cell sensors, the EPA-approved optical RDO sensor is insensitive to common interferences like ammonia, pH and chloride. Plus, its fast response makes it ideal for vertical profiling in dynamic water conditions.