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Thermo Scientific™ Orion Star™ A215 pH/Conductivity Benchtop Multiparameter Meter

Reliably measure pH, conductivity and temperature with the Thermo Scientific™ Orion™ Star A215 pH / Conductivity Benchtop Meter for advanced lab analysis and interfacing

$2,400.58 - $3,463.24


AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. 1010003)
Accuracy (Conductivity) 0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
Accuracy (mV) ±0.2 mV or ±0.05% of reading whichever is greater
Accuracy (pH) ±0.002pH
Accuracy (Resistivity) 0.5% of reading ±1 digit
View More Specs
Catalog Number Mfr. No. Description Includes Price Quantity    


thermo scientific™
Orion Star A215 pH/conductivity benchtop meter with stand Star A215 pH/conductivity meter, electrode stand, universal power adapter, literature CD, printed quick start guide, computer interface cable and meter test certificate Each for $2,400.58


thermo scientific™
Orion Star A215 pH/conductivity benchtop meter kit with ROSS Ultra Triode epoxy-body pH/ATC electrode, DuraProbe 4-cell conductivity sensor, solutions and stand Each for $3,463.24
Description & Specifications


AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. 1010003)
Accuracy (Conductivity) 0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
Accuracy (mV) ±0.2 mV or ±0.05% of reading whichever is greater
Accuracy (pH) ±0.002pH
Accuracy (Resistivity) 0.5% of reading ±1 digit
Accuracy (Salinity) 0.5% of reading ±1 digit
Accuracy (TDS) 0.5% of reading ±1 digit
Accuracy (Temperature) ±0.1°C
Alarm Output High/low limit alarm, calibration due alarm
Backlight Option Yes, selectable
Battery Life 800 hours
Battery Type Four AA (sold separately)
Calibration pH with calibration editing option, relative mV (RmV), ORP, conductivity with calibration editing option and temperature
Calibration Points 1 point relative mV (RmV) mode, 1 point ORP mode
Cell Constant 0.001 to 199.9cm-1
Certifications/Compliance CE, TUV 3-1, FCC Class A
Channels 2
Data Management Details Transfer single, range or all data points to printer or computer
Calibration Points (Conductivity) Up to 5
Calibration Points (pH) 1 to 5
Data Points 2000 with date and time stamp
Dimensions (L x W x H) 24cm x 18cm x 11cm (9.5 in. x 7.1 in. x 4.3 in.)
IP Rating IP-54
Languages English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Range (Conductivity) 0.001 µS/cm to 3000 mS/cm
Range (pH) -2.000 to 20.000pH
Resolution (Conductivity) 0.001 μS minimum, auto ranging up to 4 significant digits
Resolution (pH) 0.1, 0.01, 0.001pH
Display Type Graphic LCD with backlight
Inputs BNC (pH or ORP electrode), pin-tip (reference electrode), 8 pin MiniDIN (conductivity sensor with built-in temperature or ATC temperature probe), stirrer input (stirrer probe)
Isopotential Point 7.000pH
Keypad Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
Log Function Type Automatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous measure mode
Measurement Modes pH, mV, relative mV (RmV) or ORP with temperature; conductivity, TDS, salinity or resistivity with temperature
Memory Non-volatile memory preserves data log, calibration log and meter settings
Methods 10 per channel with password protection
Model Orion Star A215 pH/mV/RmV/ORP/Conductivity/TDS/Salinity/Resistivity/Temperature Benchtop Meter
Outputs USB, RS232
Power Supply Universal AC adapter (included) or 4 AA batteries (sold separately)
Range (mV) ±2000.0mV
Range (ORP) ±2000.0mV
Range (Relative mV) ±2000.0mV
Range (Resistivity) 2 ohm to 100.0 meg-ohm
Relative Humidity Range 5 to 85 %, non-condensing
Resolution (mV) 0.1mV
Resolution (Resistivity) 1 ohm or 0.1 meg-ohm, auto ranging
Resolution (Salinity) 0.01 psu or 0.01 ppt minimum, auto ranging
Resolution (TDS) 0.001 ppm minimum, auto ranging up to 4 significant digits
Resolution (Temperature) 0.1°C, 0.1°F
Salinity Measurement Modes Practical salinity (psu) or natural sea water (ppt)
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
TDS Factor Range Linear (0.02 to 9.99)
Temperature Compensation Linear, nLFn (non-linear ultra pure water), nLFu (non-linear ultra pure degassed water), EP (off with warning) or off
Temperature (English) Operating 41° to 113°F (ambient)
Temperature (Metric) Operating 5° to 45° C (ambient)
Temperature (Metric) Reference 5, 10, 15, 20, 25°C
Temperature Probe Calibration 1 point temperature offset calibration
Temperature Selection Manual or automatic with ATC temperature probe
Warranty 3 year meter warranty
Weight (English) 2 lb.
Weight (Metric) 0.9kg

Record accurate and reliable pH, mV, ORP, conductivity, total dissolved solids (TDS), salinity, resistivity and temperature measurements with the Thermo Scientific™ Orion™ Star A215 pH and Conductivity Benchtop Meter, ideal for a wide range of applications and advanced pH and conductivity analysis in the lab. Use the two meter channels to measure pH and conductivity simultaneously or view each channel separately. Perform up to a 5 point 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.

Thermo Scientific Orion Star A215 pH/conductivity benchtop meters are easy to use, dependable laboratory meters with advanced features and functions. Selectable read modes and stability indicator give you flexibility and control over your testing. All critical data is shown with your 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 so you can quickly access, evaluate and change measurement and instrument settings.

  • Combined convenience with the benefits of a pH meter and conductivity meter in one easy-to-use system
  • Measure pH, mV, relative mV or ORP with temperature on channel one and measure conductivity, TDS, salinity or resistivity with temperature on channel two
  • Easily view individual measurements on a full screen display and quickly toggle to a split screen display to view multiple measurements simultaneously
  • Perform up to a five point pH calibration using automatic buffer recognition of NIST or DIN buffer groups with choice to manually enter custom buffer values
  • Perform up to a five point conductivity calibration
  • Calibration editing option allows individual points to be fixed without a full recalibration
  • Auto-ranging conductivity values offer consistent readings across entire measurement range without need to recalibrate
  • Use linear, non-linear, EP (USP) or off conductivity temperature compensation with 5, 10, 15, 20 or 25 °C reference temperatures
  • Informative, easy-to-read backlit graphic display with clear onscreen instructions simplifies operation
  • Capture your critical readings with measurement stability indicator and selectable read modes – Auto-Read holds a stable reading, Continuous shows changing readings with hold option and Timed logs data at specific intervals
  • Eliminate the need for magnetic stir bars using the meter-controlled stirrer probe (catalog number 096019) 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
  • Non-volatile meter memory ensures your data and settings are protected, even with loss of power
  • Orion Star Com software facilitates data transfer to a computer via USB or RS232 connections
  • Flexible power options with universal power adapter or optional AA batteries
  • IP54-rated housing resists dust and splashes and can be wall-mounted if table space is limited
  • Meters include CE, TUV 3-in-1 and FCC Class A certifications and 3-year replacement warranty

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