Get high accuracy and premium performance everywhere you need it with the Thermo Scientific Orion Star A326 pH, DO and RDO Portable Meter, designed for a wide range of pH, mV, ORP, dissolved oxygen and temperature testing and field applications. Evaluate samples in the most demanding locations using this waterproof meter with IP67-rated housing. Use the two meter channels to measure pH and dissolved oxygen simultaneously or view each channel separately. Log up to 5000 data point sets with time / date stamp and easily transfer calibration and data logs via USB or RS232 to a printer or computer. Features: Combined convenience with the benefits of a pH meter and dissolved oxygen meter in one easy-to-use systemMeasure pH, mV, relative mV or ORP with temperature on channel one and measure dissolved oxygen in percent saturation or mg/L with temperature using RDO optical DO probes or polarographic DO probes on channel twoEasily view individual measurements on a full screen display and quickly toggle to a split screen display to view multiple measurements simultaneouslyPerform up to a five point pH calibration using automatic buffer recognition of NIST or DIN buffer groups with choice to manually enter custom buffer values and calibration editing option that allows individual points to be fixed without a full recalibrationCalibrate 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 readingsInformative, easy-to-read backlit graphic display with clear onscreen instructions simplifies operationCapture your critical readings with measurement stability indicator and selectable read modesAUTO-READ holds a stable reading, Continuous shows changing readings with hold option and Timed logs data at specific intervalsData log collects and date/time stamps up to 5,000 measurement sets with optional sample ID and user IDCalibration log stores ten most recent calibrationsNon-volatile meter memory ensures your data and settings are protected, even with loss of powerOrion Star Com software facilitates data transfer to a computer via USB or RS232 connectionsFlexible power options with AA batteries or optional universal power adapterIP67-rated housing is waterproof for rugged field operationMeter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter standMeters offer CE, TUV 3-in-1 and FCC Class A certifications and 3-year replacement warranty Includes: Star A326 pH/RDO/DO meter8107UWMMD Orion ROSS Ultra Triode gel-filled epoxy-body pH/ATC electrode, 3 m cable 087010MD Orion RDO optical DO probe with 3 m cable, stainless steel guard, calibration sleeve and optical capOrion pH 4, 7, 10 buffer pouches, 10 each 810001 Orion ROSS storage solution, 475 mL Protective armor with electrode holders and storage sleeveHard-sided field caseFour AA batteriesPrinted quick start guide and literature CDUSB Computer cable Note: WILL NOT SHIP TO RESIDENTIAL ADDRESSES.