Dual parameter measurement designed for your routine ion measurements

Perform your routine pH and ion concentration (ISE) measurements with Thermo Scientific Orion benchtop pH and ISE meters. 

Orion ISE benchtop and portable meters are designed to deliver the features and functionality you look for in a lab or field instrument:

  • Accurate, consistent results—day after day
  • Easy-to-use features that maximize productivity and minimize training time
  • A wide selection of benchtop meters meet your application requirements and budget
  • Durable construction for long product life
  • Modular meter designs for maximum configuration flexibility and functional expandability to help address your evolving requirements
  • Integration Thermo Scientific ROSS pH electrodes and Orion Ion Selective Electrodes (ISE)—offering a complete solution with total confidence
 

Premium

Advanced

Basic

  Orion Versa Star Pro pH/ISE
(VSTAR40 series)
Orion Dual Star pH/ISE Dual Channel
(2115000 series)
Orion Star A214 pH/ISE
(STARA2140 series)
  Premium benchtop Ion Specific (ISE) Meters Advanced benchtop Ion Specific (ISE) Meters Basic benchtop Ion Specific (ISE) Meters
  Versatile, high-performance laboratory measurement system Easy to use, dependable laboratory meters Economical, simplified
laboratory meters
Ideal for
applications in:
Pharmaceuticals, biotechnology, food and beverage, industrial Water, 
wastewater,
chemical, contract testing
Academic, 
environmental, 
power
pH range –2.000 to 20.000  –2.000 to 19.999 –2.000 to 20.000 
pH resolution 0.001/0.01/0.1  0.001/0.01/0.1  0.001/0.01/0.1 
pH calibration points Up to 6  Up to 6 Up to 5
pH calibration modes  Auto buffer recognition with option to edit values  Auto buffer recognition with option to edit values  Auto buffer recognition with option to edit values 
Automatic buffer sets USA/NIST, DIN, or Custom USA/NIST or DIN USA/NIST or DIN
mV, RmV modes Yes  Yes  Yes 
ISE Range 0.0001 to 19990  0.0001 to 19900  0.0001 to 19900 
ISE resolution Up to 4 significant digits  Up to 3 significant digits  Up to 3 significant digits 
ISE calibration points Up to 6  2 to 6 Up to 5 
Incremental techniques Single known addition or subtraction, double known addition or subtraction, analyte (sample) addition or subtraction Single known addition or subtraction, double known addition or subtraction --- 
Display type Adjustable color graphic LCD Graphic LCD Graphic LCD
Backlit display Yes  Yes  Yes 
On-screen text prompts Step-by-step calibration and guided setup instructions Step-by-step calibration and guided setup instructions Step-by-step calibration and guided setup instructions
Keypad Numeric, with menu-specific function keys Numeric, with menu-specific function keys Comprehensive, with menu-specific function keys
Number of channels  4, customizable with modules 2 1
Included modules 1 x VSTAR-ISE (VSTAR40A, VSTAR40A2);
2 x VSTAR-ISE (VSTAR40B, VSTAR40B2)
--- ---
Stirrer probe inputs 2 1 1
Measurement read Modes Auto-read, continuous, timed, single-shot Auto-read, continuous, timed, on ready, value change Auto-Read, continuous, timed
Methods 10 per channel 10 per channel 10
Data log 2,000 with date/time 1,000 with date/time 2,000 with date/time
Calibration log 30 per mode 10 10
Identification options Electrode ID, sample ID, user ID Electrode ID, sample ID Sample ID, user ID
Alarms Set point, high/low limit, calibration due High/low limit High/low limit, calibration due
External device output USB (2), RS232 USB, RS232 USB, RS232
Certifications IP-54, CE, TUV 3-in-1, FCC Class A CE, TUV 3-in-1, FCC Class A IP-54, CE, TUV 3-in-1, FCC Class A
Power supply Universal, 100–240VAC, 50–60Hz (Cat. No. STARA-PWR) Universal, 100–240VAC, 50–60Hz (Cat. No. 1010003) Universal, 100–240VAC, 50–60Hz (Cat. No. 1010003) or 4 AA batteries 
  Enhance your productivity with accessories for your benchtop and portable meters. Meter Accessories ›

Complete your ion specific (ISE) measurements faster

We offer a range of ion specific (ISE) measurement instrumentation and accessories designed to meet your standards for performance and price. Our ISE meters, ISE probes, and ion specific ISE standards are designed to offer maximum repeatability and accuracy in your ISE readings.

Portable
Ion Specific
(ISE) Meters

portable Ion Specific (ISE) Meters

Bring the lab outdoors with portable meters for dependable performance in the field. High-quality meters are essential to the critical, routine conductivity measurements you perform every day. We offer a wide range of portable ion specific (ISE) meters for your measurement needs, performance specifications, and budgetary constraints.

Learn more  

Electrodes
and
Probes

Ion Specific (ISE) electrodes

Perform accurate and reproducible measurements in any application. Our wide selection of electrochemical probes, sensors, and electrodes are designed to make your complex measurements routine, reliable, and accurate—in the lab or in the field. Available in a variety of body materials, body styles, and sample requirements.

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Buffers
and
Solutions

ISE buffers and solutions

Using high-quality, fresh solutions to calibrate and maintain your electrodes, probes, and sensors is an essential part of good laboratory practices. Having fresh Thermo Scientific Orion solutions available for your routine calibration needs is the best way to ensure your data is both accurate and reproducible when accuracy is critical.

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Choose the right pH meter for your lab

This interactive Orion pH Meter Selector Tool will help guide you to the ideal Thermo Scientific Orion benchtop or portable meter and accessories based on your requirements. 

Find your meter

Support

Knowledge Base: Certificates of Analysis and SDS for Orion, ROSS, AQUAfast, AquaMate, and AquaSensors products.

Orion Meters Software and Upgrades
Thermo Scientific Orion benchtop and portable meters are designed to help deliver accurate, consistent results, day after day. Boost productivity by upgrading your software today.

Find your software