In-Situ^® Rentals offers a field-ready line of water quality equipment for measuring and logging conductivity, dissolved oxygen, pH/ORP, turbidity, and water levels in surface water and groundwater monitoring applications. Choose from a variety of rental equipment to meet your requirements: Aqua TROLL instruments, TROLL^® 9500 instruments, Total Dissolved Gas monitors, and portable handheld meters.

The TROLL 9500 and portable meters feature the RDO^® optical dissolved oxygen sensor for reliable operation in the field.

The In-Situ Flow-Sense system for low-flow groundwater water sampling features the TROLL 9500 instrument. This system automates the collection of well and pumping information, monitors and records the stabilization of key water quality parameters, and automatically generates full calibration and sample reports that conform to federal and regional regulations.