Thermo Orion Star A214 pH and ISE Meter

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The Thermo Orion Star A214 pH and ISE Benchtop Meter offers a wide range of measurement options, in a portable, reliable and accurate package. This ph Meter measures in pH, mV, relative mV, ORP or ion concentration (ISE) with temperature, and features a selectable stability mode to fit the situation. The Thermo Orion Star A214 can be set to either fast, medium or slow, a smart stability setting to adapt to potential changes, or an automatic smart averaging setting. This pH and ISE Benchtop Meter is robust with the ability to perform up to 5-point pH and ISE calibrations, as well as log up to 2000 data points complete with a date and time stamp, which can be exported through USB or RS232 ports to a printer or computer for further use. Navigating this multiparamter meter is simple through the easy to read back lit LCD screen with an intuitive graphical display, and menu specific function keys and dual-purpose shortcut keys and scrolls. Users of the Thermo Orion Star A214 pH and ISE Benchtop Meter can also select their preferred language from English, Spanish, French, Italian, German and Chinese.

Thermo Orion Star A214 pH and ISE Benchtop Meter Specifications:

Range (pH)

-2.000 to 20.000pH

Accuracy (pH)


Resolution (pH)

0.1, 0.01, 0.001pH

Range (mV)


Range (Relative mV)


Range (ORP)


Resolution (mV)


Accuracy (mV)

±0.2 mV or ±0.05% of reading whichever is greater

Range (ISE)

0.0001 to 19900 with selectable units of ppm, Molar, mg/L, %, ppb or none

Resolution (ISE)

0.0001 minimum, 1 to 3 significant digits (user selectable)

Accuracy (ISE)

±0.2 mV or ±0.05% of reading whichever is greater

Advanced ISE Functions

Segmented (point-to-point) slope, non-linear selectable auto-blank, low concentration range stability


pH with calibration editing option, ion concentration (ISE) with calibration editing option, relative mV (RmV), ORP and temperature

Calibration Points (pH)

1 to 5

Calibration Points (ISE)

1 to 5

Calibration Points

1 point relative mV (RmV) mode, 1 point ORP mode

Isopotential Point


Range (Temperature)

-5.0° to 105.0° C, 22.0° to 221.0° F

Resolution (Temperature)

0.1°C, 0.1°F

Accuracy (Temperature)


Temperature Selection

Manual or automatic with ATC temperature probe

Temperature Probe Calibration

1 point temperature offset calibration



Data Points

2000 with date and time stamp

Alarm Output

High/low limit alarm, calibration due alarm


Non-volatile memory preserves data log, calibration log and meter settings


10 per channel with password protection

Probe Type

pH electrode, ORP electrode, ion selective electrode (ISE), reference half-cell electrode, ATC temperature probe, stirrer probe (purchase separately)

Battery Life

800 hours

Temperature (English) Operating

41° to 113°F/ 5° to 45° C (ambient)

Relative Humidity Range

5 to 85 %, non-condensing

Dimensions (L x W x H)

24cm x 18cm x 11cm (9.5 in. x 7.1 in. x 4.3 in.)


Universal AC Adapter  (50-60 Hz, 100-240 VAC ) or Four AA Batteries  (sold separately)


6 lbs


  • Thermo Orion Star A214 pH and ISE Benchtop Meter 
  • 1 Stirrer 
  • 1 Temperature Probe, Cat 927007MD Star ATC Probe
  • Ph Meter Model 81-02
  • Reservoir Bottle, Cat 13-620-499
  • Stand
  • 30-Day Warranty

This Thermo Orion Star A214 pH and ISE Benchtop Meter  has been fully inspected and tested for accuracy. All of our lab equipment comes backed with our standard warranty. Should you have any questions, please don't hesitate to contact us.

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