Get high accuracy and premium performance everywhere you need it with the Thermo Scientific Orion Star A329 pH, ISE, Conductivity, DO and RDO Portable Meter, designed for a wide range of pH, ion concentration, conductivity, 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 three channels to measure pH, conductivity and DO simultaneously or view each channel separately. Log up to 5000 data point sets with time / date stamp and transfer to a printer or computer. Features: Combined convenience with the benefits of a pH/ISE meter, conductivity meter and dissolved oxygen meter in one easy-to-use systemMeasure pH, ion concentration, mV, relative mV or ORP with temperature on channel one; measure conductivity, TDS, salinity or resistivity with temperature on channel two; and measure dissolved oxygen in percent saturation or mg/L with temperature using RDO optical DO probes or polarographic DO probes on channel threeEasily view individual measurements on a full screen display and quickly toggle to a split screen display to view multiple measurements simultaneouslyPerform up to five point pH and ISE calibrations with calibration editing option that allows individual points to be fixed without a full recalibrationPerform up to a five point conductivity calibrationAuto-ranging conductivity values offer consistent readings across entire measurement range without need to recalibrateUse linear, non-linear, EP (USP) or off conductivity temperature compensation with 5, 10, 15, 20 or 25 C reference temperaturesCalibrate 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 5000 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 A329 pH/ISE/conductivity/RDO/DO meter8107UWMMD Orion ROSS Triode 3-in-1 pH/ATC probe, 3 m cable013010MD Orion DuraProbe conductivity probe, 3 m cable087010MD Orion RDO optical DO probe with 3 m cable, stainless steel guard, calibration sleeve and optical cap910410 Orion pH 4.01 buffer, 10 pouches910710 Orion pH 7.00 buffer, 10 pouches911010 Orion pH 10.01 buffer, 10 pouches810001 Orion ROSS electrode storage solution, 475 mL01100710 Orion 1413 S.