Thermo Fisher Scientific
For over 50 years, Thermo Fisher Scientific has been making accurate and reliable liquid sensing and water analysis instruments for thousands of organizations in hundreds of industries where compromise is not an option. Thermo Scientific products are the gold standard in liquid testing, providing the precision, reliability and reproducibility you need for even the most complex measurements. Our full-range of electrodes, sensors, meters and analyzers support everything you need to measure water quality: from monitoring pH levels to chemicals to trace minerals. As one of the world’s largest scientific equipment companies, we offer direct service and support to you through our worldwide network of distributors and manufacturer’s representatives.


22 Alpha Road
Chelmsford, MA 01824
United States
Toll-free: 800.225.1480
Phone: 978.232.6000
Fax: 978.232.6015


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Products + Services

Thermo Scientific Orion pHR ROSS electrodes utilize a unique differential reference system and are built for superior performance and longevity, even in extreme temperature-fluctuating applications. Reduce maintenance time and cost of ownership by replacing your pH electrode with a ROSS pHR electrode, and enhance its performance further by pairing it with the Thermo Scientific AquaPro multi-input... more
  • Thermo Scientific Orion pHR ROSS electrodes utilize a unique differential reference system and are built for superior performance and longevity, even in extreme temperature-fluctuating applications. Reduce maintenance time and cost of ownership by replacing your pH electrode with a ROSS pHR electrode, and enhance its performance further by pairing it with the Thermo Scientific AquaPro multi-input... more
  • The Thermo Scientific Orion Versa Star is the ultimate benchtop meter offering the highest in versatility, performance and simplicity for your lab.  When you need to change the parameters you measure, the Orion Versa Star meter evolves with you. Simply swap out a measurement module from one of the meter’s four available channels and you’re ready to go. There are five measurement modules... more
  • Thermo Scientific Orion AquaMate spectrophotometers combine world-renowned innovative technology, compact design and ease of use to obtain reliable, accurate results. AquaMate spectrophotometers are available in two versions to meet application needs: The AquaMate 7000 is a cost-effective solution for measurements in the visible-only range, while the AquaMate 8000 can carry out measurements... more
  • The Thermo Scientific AquaPro multi-input process analyzer is an intelligent, flexible analysis platform for a wide range of water and wastewater treatment applications. It displays the status of up to four measurement parameters simultaneously. A complete picture of process status can be displayed on a single instrument due to the AquaPro analyzer’s multichannel capability, which reduces the... more
  • Designed to make it quick and easy to choose the right pH electrode for any laboratory application, the Thermo Scientific Orion pH Electrode Selection Guide is an interactive guide that helps the user select the most appropriate pH electrode to meet his or her indicated needs and budget. Simply and intuitively, the guide asks an operator a series of questions about requirements—including the type... more
  • Thermo Scientific Orion Star A223/323 RDO optical dissolved oxygen meters ensure the best accuracy with the least amount of maintenance. They are ideal for effluent, aeration basins and even influent, since the sensor is not affected by color and turbidity. There are no membranes or sensor maintenance. The rugged meter design is available in a variety of options, from single to multi-parameter... more
  • The Thermo Scientific Orion ROSS Ultra triodes provide precise pH and temperature measurements with the convenience of using one electrode. Ideal for the most critical measurements, they offer optimum performance by delivering fast, accurate readings. The electrodes are available with chemical-resistant glass bodies or rugged epoxy bodies. Their capabilities include excellent response in samples... more
  • The Thermo Scientific Orion Chlorine XP analyzer uses colorimetric DPD chemistry to provide accurate measurements of free, total residual and combined chlorine in water. Design innovations in the Chlorine XP analyzer also measure other key water quality parameters, such as pH and temperature, reducing the need to purchase multiple analyzers. In addition, reagent consumption is decreased,... more
  • The Orion DUAL STAR meter is ideal for taking two measurements simultaneously from one sample. The capability to save up to 10 methods and the related calibration standards per channel, minimizes errors and makes repeated, routine testing a breeze. The meter interface works well for beginners and experienced users alike. more
  • The ROSS Ultra Triode measures pH and temperature while offering the convenience of performing both measurements with one premium electrode. It delivers fast, accurate readings and ease of use. Other features include: unmatched response in samples at different temperatures; accuracy within 0.03 pH units when using automatic temperature compensation; fast temperature response within 1° Celsius;... more


Expert Insight

Thermo Fisher Offers New Online Process Analyzer

A new online process analyzer that measures chlorine and other key water quality parameters is designed to deliver high performance and cost of ownership savings in... more

Thermo Fisher introduces AquaMate Spectrophotometers

Thermo Fisher Scientific Inc. has expanded its portfolio of optical measurement instruments with the introduction of the Thermo Scientific Orion AquaMate 7000 and 8000... more

pH Measurements in the Presence of Organic Materials

Specific solutions for typical problems when measuring nonaqueous solutionsWith the wide range of organic constituents of solutions that require a pH measurement, there... more

Product Categories

Analytical Equipment; Communications Equipment & Systems; Chemical Metering Accessories; Analytical Instruments, Spectrophotometric; Controllers, ORP; Analytical Instruments, Water/Wastewater; Chlorine/Chloramines; Controllers, pH; Controllers, Temperature; Water Meters; Instrumentation, Chlorine Residual; Instrumentation, Chlorine Testing; Laboratory Chemicals; Monitoring Systems; Instrumentation, Conductivity; Meters; Monitors; Instrumentation, Dissolved Oxygen; Process Controllers; Instrumentation, ORP; Instrumentation, pH; Instrumentation, Water Quality Monitoring; Instruments; Transmitters, Pneumatic, Electric; Multiparameter Sensors; Meters, Water; Probes, Sensors & Transducers; Laboratory Equipment; Sampling & Analyzing; Sensors, Dissolved Oxygen; Suspended Solids Monitors; Turbidimeters; Water Analysis Products

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