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.