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Orion™ Star™ A211 pH Benchtop Meter, Thermo Scientific

Supplier: Thermo Scientific

Reliably measure pH, mV, ORP, and temperature with the Orion™ Star™ A211 pH Benchtop Meter for advanced lab analysis and printer or computer interfacing.

  • Perform up to a five point pH calibration using automatic buffer recognition of NIST or DIN buffer groups
  • Calibration editing option allows individual points to be fixed without a full recalibration
  • Auto-Read mode holds a stable reading, Continuous mode shows changing readings with hold option, and Timed mode logs data at specific intervals
  • Eliminate the need for magnetic stir bars using the meter-controlled stirrer probe to uniformly mix solutions
  • Data log collects and date/time stamps up to 2000 measurement sets with optional sample ID and user ID
  • Calibration log stores ten most recent calibrations
  • Three-year meter warranty
Record accurate and reliable pH, mV, ORP, and temperature measurements with the Orion™ Star™ A211 pH Benchtop Meter. The unit is ideal for a wide range of applications and advanced pH analysis in the lab. Perform up to a five point pH calibration, log up to 2000 data point sets with time/date stamp, and easily transfer calibration and data logs via USB or RS232 to a printer or computer with free downloadable Orion™ Star Com software. Use the included electrode stand to easily place sensors in samples and simplify storage to minimize breakage.

These easy to use, dependable laboratory meters offer advanced features and functions. Selectable read modes and stability indicator provide flexibility and control over testing. All critical data is shown with measurements, including temperature, date and time, read type, measurement stability, active calibration information, and electrode condition icon. Onscreen calibration and setup instructions can be displayed in several local languages with new languages added through software updates. Navigation is fast and simple due to the comprehensive keypad with menu-specific function keys, dual purpose scroll/shortcut keys, plus power, measure, log view, and stirrer keys that ensure easy operation. All setup menus are in one location with direct access using a single shortcut key for quick access, evaluation, and changes to measurement and instrument settings. Flexible power options with universal power adapter or optional AA batteries.

The IP54-rated housing resists dust and splashes, and can be wall-mounted. Non-volatile meter memory ensures data and settings are protected, even with loss of power.

Ordering Information: For compatible pH electrodes, see Orion™ items 8302BNUMD and 8157BNUMD. For compatible buffer solutions, see Orion™ item 810199.

CE, TUV 3-1, FCC Class A.



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Meters and Kits
Description Includes Supplier No. Catalog Number Unit List Price Quantity
Orion™ Star™ A211 pH Benchtop Meter Kit with ROSS Ultra Triode glass-body pH/ATC Electrode Star™ A211 pH meter, ROSS Ultra Triode glass-body pH/ATC electrode, ROSS pH buffer and solution kit, electrode stand, universal power adapter, literature CD, printed quick start guide, computer interface cable, and meter test certificate STARA2115 89206-304 Each Retrieving


Alarm High/low limit alarm, calibration due alarm
Battery Life 800 hours
Battery Type Four AA (sold separately)
Calibration pH with calibration editing option, relative mV (RmV), ORP and temperature
Calibration Points 1 point relative mV (RmV) mode; 1 point ORP mode; 1 to 5 points pH mode
Channels 1
Data Memory 2000 with time/date stamp
Dimensions 24L x 18W x 11H cm (9.5 x 7.1 x 4.3")
Display Graphic LCD with backlight
IP rating IP-54
Input BNC (pH or ORP electrode), pin-tip (reference electrode), 8 pin MiniDIN (ATC temperature probe), stirrer input (stirrer probe)
Languages English, Spanish, French, Italian, German, and Chinese (Portuguese and Korean available with software update)
Memory Non-volatile memory preserves data log, calibration log, and meter settings
Operating Temperature Range 5 to 45°C (41 to 113°F)
Outputs USB, RS232
Power Supply Universal AC adapter (included) or 4 AA batteries (sold separately)
Temperature Accuracy ±0.1°C
Temperature Resolution 0.1°C, 0.1°F
Weight 0.9 kg (2 lbs.)
mV Accuracy ±0.2 mV or ±0.05% of reading whichever is greater
mV Range ±2000.0 mV
mV Resolution 0.1 mV
pH Accuracy ±0.002 pH
pH Range -2.000 to 20.000 pH
pH Resolution 0.1, 0.01, 0.001 pH
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