pH, Ion, Conductivity & Oxygen Measurement

Meet your sample analysis challenges in the lab or in the field

Tackle your specific sample analysis challenges head-on with our rich portfolio of meters, electrodes, and solutions. Whether you are measuring pH, ion concentration (ISE), conductivity, dissolved oxygen, temperature, or a combination of parameters, we offer simple, complete systems that are seamlessly integrated and designed for a range of industries and applications. 

Our Thermo Scientific™ Orion™ product line is well known around the world for excellence in water and liquid analysis. Our meters, electrodes, buffers, standards, and solutions are designed for a number of applications and industries:

  • General laboratory testing
  • R&D
  • Government compliance
  • Pharmaceutical
  • Power generation
  • Drinking water
  • Wastewater treatment
  • Food and beverage testing
  • Environmental
  • General industrial processing

Orion Versa Star Pro Meters—Now available

Designed to help ensure data integrity by preventing undesired access to various meter functions.

Download brochure ›

To purchase today, choose the model for your application below:

We offer an extensive line of pH meters, pH electrodes, buffers, and kits designed to make your complex lab and field measurements routine and reliable.

Our benchtop and portable conductivity meters, conductivity probes, conductivity cells, and conductivity standards are designed to offer maximum repeatability and accuracy in your conductivity readings.

We offer meters, electrodes, and solutions designed to measure a range of ions, including fluoride, chloride, ammonia, sodium, silver sulfide, bromide, cadmium, calcium, carbon dioxide, cyanide, and more.

Whether in the lab or in the field, our dissolved oxygen meters, rugged dissolved oxygen probes, and solutions are designed to meet your standards for performance and price for your dissolved oxygen readings.

Measure pH, ion concentration, conductivity, dissolved oxygen, and temperature with a single, powerful meter. Our benchtop and portable multiparameter meters are designed to increase your productivity in the lab and in the field.

Enhance your productivity while protecting your investment. We offer an assortment of accessories for our meters, electrodes, and probes for your testing needs.

Thermo Scientific™ Orion™ stirrer probe electrodes automatically stir samples for better accuracy without having to deal with a separate stir plate and stir bar. 

Thermo Scientific™ Orion™ automatic temperature compensation electrodes automatically correct the pH measurement during a temperature change.

Orion meter brochure

The measure of confidence

Download the Thermo Scientific™ Orion™ Solutions brochure to learn about our premium, advanced, and basic meters and help identify the best match based on your required features, performance specifications, and budget.

Download brochure ›