Thermo Scientific™ Orion Star™ A111 pH Benchtop Meter

Take simple pH, mV and temperature measurements with the Thermo Scientific™ Orion™ Star A111 pH Benchtop Meter with easy operation for basic lab testing

Manufacturer: Thermo Scientific™ STARA1115

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Catalog No. 13-645-503

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Limited warranty period: Subject to all warranty requirements and exclusions set out in our Terms and Conditions of Sale, this product is warranted from the date we ship the product and for ninety (90) days thereafter. Disclaimer to internal research use restriction: Any restrictions on the purchaser to utilize the product(s) for internal research purposes only does not apply to the product(s) on the web pages associated with this statement.


    Inputs BNC (pH or ORP electrode), 8 pin MiniDIN (ATC temperature probe)
    Probe Type pH electrode, ORP electrode, ATC temperature probe (includes 9157BNMD Orion Triode pH/ATC electrode)
    Warranty 3 year meter warranty
    Calibration pH, relative mV (RmV) and temperature
    Calibration Points 1 point relative mV (RmV) mode
    Isopotential Point 7.00pH
    Range (Temperature) -5.0° to 105.0° C, 22.0° to 221.0° F
    Temperature Selection Manual or automatic with ATC temperature probe
    Model Orion Star A111 pH/mV/RmV/Temperature Benchtop Meter
    Temperature Probe Calibration 1 point temperature offset calibration
    Channels 1
    Keypad Simple with highlighted measure key, scroll and shortcut keys
    Measurement Modes pH, mV or relative mV (RmV) with temperature
    Stability Smart Stability and Smart Averaging
    Memory Non-volatile memory preserves log and settings
    Languages English
    Power Supply Universal AC adapter (included) or 4 AA batteries (sold separately)
    Includes Star A111 pH meter, 9157BNMD Orion Triode epoxy-body pH/ATC electrode, 916099 pH buffer and solution kit, electrode stand, universal power adapter, literature CD, printed quick start guide and meter test certificate
    Dimensions (L x W x H) 24cm x 18cm x 11cm (9.5 in. x 7.1 in. x 4.3 in.)
    Weight (Metric) 0.9kg
    Weight (English) 2 lb.
    Resolution (mV) 0.1mV
    Data Management Details Internal data point memory
    Battery Type Four AA (sold separately)
    Certifications/Compliance CE, TUV 3-1, FCC Class A
    Relative Humidity Range 5 to 85 %, non-condensing
    Range (mV) ±1600.0mV
    Calibration Points (pH) 1 to 3
    Resolution (Temperature) 0.1°C, 0.1°F
    Accuracy (Temperature) ±0.1°C
    IP Rating IP-54
    Temperature (English) Operating 41° to 113°F (ambient)
    Temperature (Metric) Operating 5° to 45° C (ambient)
    Range (pH) -2.00 to 16.00pH
    Accuracy (pH) ±0.01pH
    Range (Relative mV) ±1999.9mV
    Description Orion Star A111 pH benchtop meter kit with Triode pH/ATC electrode, solutions and stand
    Accuracy (mV) ±0.2 mV or ±0.05% of reading whichever is greater
    Display Type LCD
    Data Points 50
    Log Function Type Automatic data logging with Auto-Read measure mode; manual data logging with Continuous measure mode
    Outputs None
    AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. 1010003)
    Battery Life 2000 hours
    Resolution (pH) 0.1, 0.01pH

    Take simple, routine pH, mV and temperature measurements with the Thermo Scientific™ Orion™ Star A111 pH Benchtop Meter, an easy-to-use and budget-friendly instrument for basic pH analysis in the lab. Perform up to a three point pH calibration with easy recall of calibration points and slope. Quickly navigate setup menus and ensure consistent calibrations using the simple keypad layout and on-screen text prompts. Use the included electrode stand to easily place sensors in samples and simplify storage to minimize breakage.

    Thermo Scientific Orion Star A111 pH Benchtop Meters combine simplicity with accuracy. A large LCD displays pH or mV readings along with temperature. Icons provide quick updates on battery life, electrode status and calibration information. Simple button layout and onscreen messages help with calibration and setup menu choices.

    • Large, informative screen clearly shows the main information, including pH or mV reading, temperature, meter mode, calibration information and power source
    • Don't miss a reading — AUTO-READ™ locks in the stable reading on your screen and ready indicator alerts when readings are stable
    • Up to three point pH calibration
    • Automatic recognition of USA/NIST and DIN buffers
    • Easily recall calibration slope data for procedure checks
    • Nonvolatile memory holds up to 50 data points
    • Included electrode arm and newly designed probe holder make it easier to maintain and place probes into samples
    • Plug the meter into almost any power outlet with the included universal power adapter or use four AA batteries (sold separately) to run the meter on DC power
    • The IP54-rated housing can handle splashes and can be wall-mounted if table space is a problem
    Includes: Orion STAR A111 pH Benchtop Meter, Part no. STARA1110, includes electrode arm with redesigned holder and universal power adapter

    Orion STAR A111 pH Benchtop Meter Kit, Part no. STARA1115, includes 9157BNUMD Orion Triode™ 3-in-1 pH/ATC probe; Solution kit (60mL each of pH 4, 7 and 10 buffers; storage solution and cleaning solution); electrode arm with redesigned holder and universal power adapter

    Orion STAR A111 pH Benchtop Meter Kit, Part no. STARA1116, includes GD9156BNWP Orion Green electrode; 927007MD Stainless Steel ATC Probe; electrode arm with redesigned holder and universal power adapter

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