pH Meters

Whatever you need to measure, be it pH, ORP, ion concentration, conductivity or dissolved oxygen (DO, BOD), METTLER TOLEDO with its long-term experience provides you with the support you need. Our focus is on high quality products combined with simple, intuitive operation and ergonomic design. The comprehensive product portfolio covers the most varied electrochemical applications in all sectors and offers solutions both for complex applications subject to regulatory control as well as for simple routine measurements.

Current Promotions

  • Receive up to a $400 cash-back rebate with your next METTLER TOLEDO Balance, pH Meter, or Analytical Instrument purchase.
  • Trade in your old balance and receive a 15% cash back rebate with your new Balance purchase.

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Product selection


Designed with the objective to optimize the workflow and increase the efficiency of you lab work.

SevenCompact S210

Intuitive operation, and starting a measurement or calibration requires only a single keypress.

SevenCompact 220

Universal and reliable for a wide range of applications.

SevenCompact S230

Measures conductivity, as well as various other parameters such as salinity, resistivity, and total dissolved solids.


Compact design with a large display and intuitive button arrangement.


Portable, robust and waterproof design for pH, conductivity, and dissolved oxygen determination.


Robust meters provide durability and one-handed operation; ideal for mobile applications in the lab, at-line, or outdoors.

SevenGo Duo

Multiparameter portable meter with automatic endpoint and buffer recognition.


Proven sensor technology for safe and reliable results.

Buffers and Solutions

NIST-traceable buffers for pH electrode calibration and verification.


Improve productivity and ensure compliance with accessories ideal for your application.

Electrode Finder

Find the right sensor for your application using the METTLER TOLEDO Electrode Finder