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product arrow Orion* 4-Star Plus pH/DO Benchtop Multiparameter Meter

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Orion* 4-Star Plus pH/DO Benchtop Multiparameter Meter

  • Thermo Scientific* benchtop pH/dissolved oxygen multiparameter meter with dual channels and dual display.
  • Measures pH and DO simultaneously in a compact, ergonomic package.

Part Number Description
1116000 Orion 4-Star Plus pH/Dissolved Oxygen Benchtop Meter only
1116001 Orion 4-Star Plus pH/Dissolved Oxygen Benchtop Meter Kit with separate pH, temperature and DO probes. Includes Ross Ultra refillable glass pH electrode, epoxy ATC probe, polarographic DO probe with 3m cable, pH buffers, DO calibration sleeve, BOD reservo
1116201 Orion 4-Star Plus pH/Dissolved Oxygen Benchtop Meter Kit with pH/ATC Triode and DO probes. Includes refillable epoxy-body pH/ATC Triode electrode, polarographic DO probe with 3m cable, DO calibration sleeve, BOD reservoir/stirrer/adapter, DO probe mainte

Model Orion 4-Star Plus pH/DO Benchtop Multiparameter 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 for ORP measurements
DO Mode
Concentration Range 0.00 to 90.00mg/L
Concentration Resolution 0.1/0.01mg/L
Relative Accuracy ±0.2 mg/L
% Saturation Range 0.0 to 600%
% Saturation Resolution 0.1%
Relative Accuracy ±2%
Salinity Factor 0 to 45 ppt
Barometric Pressure Compensation 450–850mmHg
Calibration Auto Calibration or Manual Input; water-saturated air and air-saturated water, Winkler Titration for BOD
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
Temperature Compensation DO, auto; pH, auto/manual -5° to +105°C
Display Custom LCD; simultaneous display of selected measurement and temperature, pH calibration points, and current electrode condition
Inputs BNC for pH/ORP electrodes; 9-Pin Mini-DIN Locking for DO; 8-Pin Mini-DIN Locking for ATC probe; Pin tip for separate reference electrode; Phono jack for stirrer
Sensor Types Polarographic DO probe; pH/ORP electrode
Outputs Bidirectional RS-232, stereo jack, optional USB interface cable
Data Management GLP Electrode Veri?cationSaves 750 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
Compliance 21 CFR Part II Compliant with optional software
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