Thermo Orion Star A326 pH/RDO/DO Portable Meters

• Large, backlit graphic LCD display shows individual pH/mV/RmV or dissolved oxygen in percent saturation or concentration results with temperature, or all results at once.
• Additional information include electrode status, time, date, sample ID, user ID and calibration points.
• Advanced features such as stability and averaging options available.
• AUTO-READ™ locks in the stable reading, ready indicator alerts when readings are stable and timed reading gathers data in specific time intervals.
• Accepts and automatically recognizes Orion polarographic and RDO optical/luminescence-based probes.
• Automatic temperature, manual salinity and automatic/manual barometric pressure correction.
• Non-volatile memory holds up to 2000 data points with time and date stamp.
• Up to 5-point pH calibration with automatic recognition for USA/NIST and DIN buffers.
• Fix pH calibration errors without a complete recalibration with calibration editing.
• Calibrate DO using water-saturated air, air-saturated water, a Winkler titration or zero point calibration.
• Multilingual interface supports English, French, Spanish, Italian, German and Chinese.
• Waterproof. IP67-rated housing.
• Log function: Manual, ready (includes AUTO-READ™), timed. Log edit: delete individual points, group of points or all.
• Inputs: (pH electrode) BNC, reference pin; (DO with temperature probe) 9-pin, mini-DIN.
• Output: RS232 and USB.
• Power: 4 x AA batteries (included) provide over 800 hours of operation, or 100-240V with the AC adapter (sold separately).
• Warranty: 3 year meter replacement.

Specifications:
• pH range: -2.000 to 20.000 ±0.002.
• mV/RmV range: ±2000.0 ±0.2mV or ±0.05% of reading whichever is greater. EH ORP mode.
• DO range: (concentration – polarographic) 0 to 90mg/L ±0.2. (% saturation – polarographic) 0 to 600 ±2%. (concentration – RDO) 0 to 50mg/L ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, 10% of reading from 20 to 50mg/L. (% saturation – RDO) 0 to 500 ±2%.
• Temperature range: 0.0 to 50.0ºC (32 to 122ºF) ±0.1. Offset calibration: 1 point.
• Manual barometric pressure correction: 450.0 to 850.0mm Hg.
• Manual salinity factor correction: 0 to 45ppt.