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product arrow Orion* 3-Star Plus pH Benchtop

Orion* 3-Star Plus pH Benchtop Meter

  • Thermo Scientific* benchtop pH meter with improved stability and accuracy.
  • The ideal meter for measuring pH in water, process, research and QA/QC testing

Part Number Description
1112000 pH meter
1112001 pH meter kit w/Triode pH/ATC electrode, buffers
1112003 pH meter kit with ROSS Ultra pH electrode, buffers
1112004 pH meter kit with SureFlow pH electrode, buffers
1112006 pH meter kit w/ROSS Ultra pH electrode, 5 x 60mL pH/ISA Solution, buffers

Model Orion 3-Star Plus pH Benchtop Meter
pH Mode
Range -2.000 to +19.999pH
Resolution 0.1/0.01/0.001pH
Relative Accuracy ±0.002pH
Calibration AUTO-CAL* and/or Manual Calibration; 1 to 5 points; US/NIST, DIN, and custom buffers recognized
mV/ORP Mode
Range ±1999.9mV
Resolution 0.1mV
Relative Accuracy ±0.2mV or 0.05%, whichever is greater
ORP Calibration EH autocalibration to standard hydrogen electrode
Temperature Mode
Range -5° to +105°C
Resolution 0.1°C up to 99.9°C, 1.0°C over 99.9°C
Relative Accuracy ±0.1°, ± 1 digit
Compensation Automatic or manual; -5° to +105°C
Display Custom backlit LCD; simultaneous display of selected measurement and temperature, pH calibration points, and current electrode condition
Inputs BNC for pH electrodes; 8-Pin Mini-DIN Locking for ATC probe; Pin tip for separate reference electrode; Phono jack for stirrer
Sensor Type pH/ORP Electrode
Outputs Bidirectional RS-232, stereo jack, optional USB interface cable
Data Management GLP Electrode Veri?cationSaves 1000 points by time, stability or manual read with time/date stampCalibration log of last 10 calibrationsUser method storage for 10 proceduresAdvanced self-test and diagnostics routinesPassword protectionDownloadable software and methods updates via Internet
Regulatory and Safety Compliance CE, CSA, UL, TUV, FCC Class A limits
Environmental Operating Conditions
Ambient Operating Temperature 5° to +45°C
Relative Humidity 5 to 85% noncondensing
IP Rating IP54 compliance: splashproof and dustproof
Stability SMART STABILITY* and SMART AVERAGING*: Resolution dependent/automatic
Power Supply Universal AC power adapter or 4 x 1.5V AA batteries (optional)
Warranty Three years from date of purchase on meter