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

Breaking News—November 20, 2009

The TROLL^® 9500 water quality instrument accommodates the following sensors:

• RDO^® optical DO sensor
• Clark cell DO sensor
• Conductivity in both low- and high-ranges
• ISE (ammonia, chloride, nitrate)

• pH
• pH/ORP
• Pressure
• Turbidity, with or without a wiper
• Each instrument comes standard with barometric and temperature sensors.