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The results obtained with a laboratory or field ORP sensor are only as accurate as the standards used for verification. METTLER TOLEDO offers quality standards in small bottles that help to eliminate contamination risk, ensure reliable ORP/redox readings, and validate the measurement results.

Ensuring your lab redox buffer is compliant is critical for validating ORP measurement results. Every Safety Data Sheet (SDS) and label for our laboratory ORP and redox buffers contains information according to the GHS (Global Harmonized System and Labeling of Chemicals) and is available in various languages.

Similarly to other solutions, laboratory ORP buffers are temperature-dependent. It is therefore important to know the temperature of the ORP/Redox buffer at the time of measurement. A table on every bottle label indicates redox values at different temperatures.

METTLER TOLEDO provides entire electrochemistry systems—from meters and sensors to calibration solutions and software. Benefit from a broad portfolio, choose the right sensor for your application, and ensure reliable ORP/redox reading by validating the sensor with quality ORP buffers.
Select from a variety of durable benchtop and portable meters to meet your needs for compliance and routine measurements. Economical models are also available.
Accurate ORP/redox measurements start with the correct sensor. Our broad electrode portfolio complements the meter and solutions range and ensures that you have a perfectly suited sensor for every application.
Measuring ORP/redox in the laboratory is a common and important analysis. Good Electrochemistry Practice™ guides you through the entire product lifecycle to detect potential risks and find the right tools to address them. This helps to ensure that you achieve accuracy in all your critical measurements.
Our pH Competence and Support Center offers you easy access to dedicated application specialists for your pH, ORP, ion, conductivity, and DO measurements. They provide know-how to help ensure a high degree of success in all your critical electrochemical analyses.
Enhance and customize your measuring system with our range of effective accessories to simplify your workflow, reduce error risk and make it easier to obtain the accuracy you need. Each meter can connect to multiple accessories and peripherals such as printers and stirrers, according to your application.
Check the pH Lab Library and find publications on pH measurement fundamentals, applications, instrumentation, pharmacopeia compliance, etc.

ORP buffer solutions are used for the verification of all common redox sensors. They are not used for calibration purposes. Similar to other solutions, an ORP buffer is temperature-dependent. It is therefore important to know the measurement temperature of the ORP buffer. A table on every bottle label indicates redox values at different temperatures.
All METTLER TOLEDO ORP buffer solutions come with clearly labeled bottles for easy handling. For larger quantities, our convenient 6-packs are the ideal choice. Since compliance with regulations is critical for us, our SDS (Safety Data Sheet) and labels include information compliant with GHS (Globally Harmonized System) standards, available in local languages. Request a safety data sheet for your ORP buffer here.