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This waterproof, battery-operated pH/DO meter stands up to the most demanding water analysis applications and delivers over 2,000 hours of continuous operation. Convenient Quick-Start Guide is located on the back of the meter to make the unit easy to operate in the field. The rugged meter displays DO concentration or percent DO Saturation and offers a full complement of GLP-related features—including available 21 CFR Part 11 software option. It offers enhanced stability indicators, salinity correction and automatic barometric pressure compensation—as well an auto-read/hold function, SMART STABILITY^TMand SMART AVERAGING^TM. A unique feature allows meter and probe calibration to a Winkler Titration for those needing to correlate measurements to Biological Oxygen Demand (BOD) readings to Winkler methods. You can record and store up to 10 setup parameters and calibrations—a valuable feature for multi-user labs. Download additional methods and software updates via the Web.