Reliable conductivity measurements for your laboratory research

The accuracy and reliability of your conductivity measurements depends on the instrumentation you use. Below you can compare and identify the best match based on your required features, performance specifications and budget.

Which benchtop conductivity meter is right for you?





  Orion Versa Star ProConductivity Benchtop Meters
(VSTAR20 series)
Orion Star A212 Conductivity Benchtop Meters
(Star A210 series)
Orion Star A112 Conductivity Benchtop Meters
(Star A110 series)
  Premium conductivity benchtop meters Advanced conductivity benchtop meters Basic conductivity benchtop 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
Conductivity range 0.001 µS to 3000 mS 0.001 µS to 3000 mS 0.01 µS to 200 mS
Conductivity resolution Up to 4 significant digits Up to 4 significant digits Up to 3 significant digits
Conductivity cal. points Up to 6 Up to 5 1
Conductivity cal. modes Auto standard recognition, manual standard entry, or manual cell constant entry Auto standard recognition, manual standard entry, or manual cell constant entry Auto standard recognition or manual cell constant entry
Temp. compensation Linear, nonlinear (nLFn, nLFu), EP/USP, off Linear, nonlinear (nLFn, nLFu), EP/USP, off Linear
Reference temperature 5, 10, 15, 20, or 25°C 5, 10, 15, 20, or 25°C 20 or 25°C
Additional modes TDS, salinity, resistivity TDS, salinity, resistivity TDS
Display type Adjustable color graphic LCD Graphic LCD Fixed-segment LCD
Backlit display Yes Yes ---
Onscreen text prompts Step-by-step calibration and guided setup instructions Step-by-step calibration and guided setup instructions Basic calibration and setup prompts
Keypad Numeric, with menu-specific function keys Comprehensive, with menu-specific function keys Simple, with highlighted measure key
Number of channels 4, customizable with modules 1 1
Included modules 1 x VSTAR-CND --- ---
Stirrer probe inputs 2 1 ---
Measurement read modes Auto-read, continuous, timed, single-shot Auto-read, continuous, timed Auto-read, continuous
Methods 10 per channel 10 ---
Data log 2000 with date/time 2000 with date/time 50
Calibration log 30 per mode 10 1
Identification options Electrode ID, sample ID, user ID Sample ID, user ID ---
Alarms Set point, high/low limit, calibration due High/low limit, calibration due ---
External device output USB (2), RS232 USB, RS232 ---
Certifications IP-54, CE, TUV 3-in-1, FCC Class A IP-54, 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) or 4 AA batteries 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 conductivity measurements faster

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

Portable Conductivity Meters

portable conductivity 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 conductivity meters for your measurement needs, performance specifications, and budgetary constraints.

Electrodes and

conductivity electrodes and probes

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.

Buffers and

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.

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


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