EPA Recommends Approval of In-Situ^® RDO^® Optical DO Methods

The U.S. EPA has granted nationwide approval to three In-Situ RDO optical DO methods under the Alternate Test Procedure (ATP) process. Learn more ...

The TROLL^® 9500 Water Quality Instrument simplifies multiparameter monitoring. The TROLL 9500 is a powerful, portable unit that houses up to nine water quality sensors, internal power, and optional data logging capabilities. Benefits include:

Lower Total Cost of Ownership

• Save time and money with automated low-flow sampling, field-replaceable sensors, long-lasting internal power, connection to TROLL^® Link Telemetry Systems for remote data management, and more.
• Reduce maintenance and site visits with the field-proven RDO^® Sensor.
  
  

Higher Reliability

• Corrosion-resistant housing suitable for fresh, waste, and marine waters
• Field-replaceable sensors for easy maintenance and calibration
• Free technical support 24 hours a day, 7 days a week

Proven Accuracy

• A factory report, using NIST^®-traceable standards where applicable, is included with each unit.
• The In-Situ^® RDO^® Sensor performs to its specifications over long-term deployments.
  
  

Easy Operation

• Innovations like Quick Cal Solution, twist-lock cable connectors, and user-friendly software make your job easier.
  
  

Applications

• Environmental monitoring
• Estuary evaluations
• Long-term deployments
• Low-flow sampling
• Mine water quality analysis
• Remediation projects
• Spot checking
• Stormwater outfall studies
• Surface water testing
• TMDL assessments
• Vertical profiling

Field Deployment Guide

The Aquatic Sensor Workgroup developed a Field Deployment Guide for both new and experienced users. This guide is designed to lead you through the steps required to successfully deploy a water-quality monitoring system with sensors.