Get high accuracy, premium performance and ultimate flexibility with the Thermo Scientific Orion Versa Star Pro Benchtop Meter with Dissolved Oxygen / RDO Module. Meet your most challenging applications for dissolved oxygen and temperature. Easily view measurements on the stunning color display and customize the four meter channels with interchangeable modules. Use an RDO optical or polarographic DO probe and calibrate using water-saturated air, air-saturated water, custom value (Winkler) or zero point. Log up to 2000 data point sets with time / date stamp and transfer to a printer or computer. Features: Onscreen measurement stability indicator lets you know exactly when your measurements are readySelectable read modes include Auto-Read to hold a stable readingContinuous to show changing readingsTimed to log data at specific intervals and Single-Shot to hold a reading after a specific wait time is reachedAudible alarms automatically notify you when a set offset value, high/low limit value, and calibration time interval are reachedEasily access, update and switch your preferred measurement settings, using ten password-protected methods per channelUniformly mix solutions using up to two meter-controlled stirrer probes that are easy to position and can be quickly rinsed between samplesData log collects and date/time stamps up to 2,000 measurement sets with optional electrode ID, sample ID and account IDCalibration log stores 30 most recent calibrations per parameterEnsure measurement integrity by viewing the active calibration log while taking readingsNon-volatile meter memory preserves data and settings, even in the event of power lossMeter software facilitates data transfers to a computer via USB or RS232 connectionsIP54-rated housing resists dust and splashes and can be wall-mounted if table space is limitedMeters include CE, TUV 3-in-1 and FCC Class A certifications and 3-year replacement warranty Includes Orion Versa Star RDO/DO Measurement Module: Measure dissolved oxygen in percent saturation or mg/L with temperature using Orion RDO optical DO probes or Orion polarographic DO probes and automatic sensor recognitionCalibrate dissolved oxygen using water-saturated air, air-saturated water, custom value (Winkler titration) and zero point optionsAutomatically compensate dissolved oxygen readings using ATC temperature, manual salinity input and built-in barometer for barometric pressure readingsCustomize measurements to show calibration history or simplify to show an extra large dissolved oxygen reading Includes: Versa Star Pro meter with RDO/DO module (VSTAR-RD)083005MD Polarographic DO probe with calibration sleeve080513 DO probe maintenance kitBOD adapter/funnel/stirrerElectrode stand, universal power adapter, USB cable and literature Note: WILL NOT SHIP TO RESIDENTIAL ADDRESSES.