Versatility meets functionality

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.

Choosing a multiparameter meter reduces the amount of equipment on your benchtop or in your hands while in the field, eliminates the need for multiple meters as the display showcases multiple parameters on one unit, and saves time in transferring electrodes from meter to meter for measurements. Combine your parameters today for simultaneous measurements saving space, time, and money.

Learn more about the regulatory requirements our benchtop and portable meters can assist you with.

Available Multiparameter Meters


The accuracy and reliability of your measurements depends on the instrumentation you use. Learn more about how you can identify the best match based on your required features, performance, specifications, and budget.


Our portable meters are rugged and waterproof, and provide dependable performance in the field without sacrificing accuracy and reliability.

Alternatively, Thermo Scientific also offers a multiparameter pocket tester as a budget-friendly on-the-go electrochemical testing solution. Measure pH, conductivity, total dissolved solids (TDS), salinity and temperature with our Elite PCTS pocket tester.

International standards for regulatory compliance requirements: 






China MEP






EPA 150.1 4500-H+(B) D1293 (A,B) 10523 GB/T 6920 <791> 2.2.3 973.41 FDA - 21 CFR 114.90

pH of soil/solid waste

SW-846 9040C & 9045D   D4972 10390 GB/T15555     994.16–994.18 USDA NRCS


EPA 120.1; SW-846 9050A 2510 (B) D1125 (A) 7888 n/a <645> 2.2.38 973.40 PSS-78 (salinity)

Dissolved oxygen

  4500-O (G) D888 (B, C) 17289; 5814 HJ506        


  5210 (B)   5815 HJ505     973.44  


SW-846 9214 4500-F (C ) D1179 (B) 10359 GB7484        


  4500-NH3 (D, E)  D1426 (B) 6778          


Orion 601; SW-846 9210A 4500-NO3 (D)              


SW-846 9215 4500-S2 (G) D4658            


SW-846 9213 4500-CN (F) D2036 (A)            


SW-846 9212 4500-Cl (D) D512 (C)   GB11896        


SW-846 9211                
  SM: Standard Methods for the Examination of Water and Wastewater. APHA, AWWA, WEF.
  ASTM: American Society for Testing and Materials
  ISO: International Organization for Standardization
  USP: United States Pharmacopeia
  EP: European Pharmacopeia
  China MEP: China Ministry of Environmental Protection
  AOAC: Association of Official Analytical Chemists
  NRCS: Natural Resources Conservation Service
  PSS-78: Practical Salinity Scale of 1978
  FDA: U.S. Food and Drug Administration
  USDA: United States Department of Agriculture

Features of Thermo Scientific Multiparameter Meters

Ease-of-use with Orion multiparameter meters

Focused on
ease of use

  • Large, easy-to-view displays make recording measurements easier and faster, and can reduce documentation errors 
  • Onscreen instructions provide guidance on calibration and setup for more consistent operation with minimum training
Reliable electrochemistry measurements in the field

Provide fast and reliable measurements

  • Selectable read modes and reading stability indicator capture and notify when measurements are ready 
  • Calibration information shown with measurements and selectable alarms help to ensure measurement integrity
Assist with compliance requirements

Assist with compliance requirements

  • Measure pH, mV, relative mV, or ORP with temperature
  • Perform pH calibrations with automatic buffer recognition of NIST or DIN buffers and manual buffer value entry options
  • View up to 0.001 pH resolution, perform up to a six-point calibration, and record key calibration data including slope

See our complete list of offerings for your measurement needs

Meter Accessories

find the right benchtop meter for your pH and ORP measurement needs

Enhance your productivity while protecting your investment. We offer an assortment of meter accessories for our benchtop and portable meters.

Electrodes and probes

electrodes and probes for your multi parameter measurements

An extensive assortment of quality electrodes and sensors are available in a variety of body materials, body styles, fill types, reference styles, and junctions to meet the needs of your sample measurements.

Buffers and solutions

buffers, electrode storage and cleaning solutions

We offer buffers, electrode storage solutions, electrode cleaning solutions, lab buffer kits, and electrode filling solutions for your measurement needs. Find the buffers and solutions that you need for your process.

Orion pH Meter Selector Tool

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