• Uses RDO (optical) or polarographic DO probes for total flexibility
• Laboratory accuracy everywhere you need it
• Waterproof IP67-rated housing

Get laboratory accuracy in a waterproof portable housing! Meter accepts both Orion polarographic and RDO (optical/luminescent) probes, which makes it a great investment if you're not ready to switch to optical technology but want to keep your options open.

The backlit display lets you view DO and temperature, plus probe status, time, date, sample ID, sample date and calibration points. Simple button layout and onscreen messages allow quick meter calibration and set up. Plain-language screen prompts are available in 6 languages.

Automatic temperature compensation, automatic/manual barometric pressure compensation, and manual salinity input produce accurate measurements. Calibrate DO using water-saturated air, air saturated water or a Winkler titration to meet your procedural requirements.

High-end features such as stability and averaging ensure accurate readings. Choose from three measuring modes: Continuous mode, AUTO-READ™ mode that locks in the stable reading on your screen, or Timed mode that displays a measurement at timed intervals.

Log up to 5,000 data points including time and date stamp. Easily transfer data or keep meter software up to date using RS-232 or USB connection and the included data analysis software. Adjustable alarms remind you to calibrate your meter after a set time period, or alert you to measurements outside your set points. Selectable visual and audible alarms alert you to measurements outside your set points.

Meter includes: four AA batteries, quick-start guide, CD with user reference guide and USB cable. Order probes separately.

• Dissolved Oxygen Range: polarographic: 0 to 90 mg/L; RDO: 0 to 50 mg/L
• Temperature Range: 0 to 50°C
• Barometric pressure/Salinity/Temperature comp: automatic / manual / automatic
• Memory function: 5,000 data sets
• Data output: USB and RS-232