Electrodes for all your pH measurement needs

pH measurement handbook download

Designed for your measurement needs, Thermo Scientific has a variety of electrode categories to narrow your selection search to the best electrode for your everyday application.

Download the pH handbook

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Electrodes by category

The desired electrode features and the compatibility of the electrode with the sample are all determining factors in selecting the right pH electrode. The following section provides the information needed to select the best pH electrode for your applications. The pH electrodes are available with a glass or epoxy body and a variety of electrode body styles, fill types, references, junctions, and connectors. To learn more, see our pH electrodes separated by category and application below.

 ROSS

  • Fast response, accuracy and reproducibility regardless of sample composition. Exhibits unmatched response to temperature variations.
  • Double junction reference for complex samples such as biological media, foods, pharmaceuticals, TRIS, sulfides, and proteins.
  • Available in all body styles.
  • ROSS Ultra electrodes have an industry best warranty.

Triode

  • Combination pH electrode with built-in temperature sensor.
  • Convenient ability to measure pH and temperature with one electrode.
  • BNC connector for pH measurement and alternative connector for temperature measurement.
  • Compatible with Thermo Scientific Orion pH meters and other brands.

    The temperature connector and temperature element can be unique to meter model.

Sure-Flow

  • Unique, free-flowing liquid-to-liquid junction
  • Easy-to-clean junction avoids clogging
  • Dirty or viscous samples can be easily measured without a clogged junction
  • Compatible with samples containing organic compounds, proteins, heavy metals, and other compounds that react with silver such as bromides, iodides, cyanides, and sulfides
  • Silver chloride sure-flow electrodes can be used on tough samples that do not require a double junction electrode to prevent contact with silver

pH electrodes by application

pH electrode features

Electrode types, features, and compatibility are determining factors in selecting the right pH electrode. pH electrodes are available with a glass or epoxy body and a variety of electrode body styles, fill types, references, junctions, and connectors to suit your application. 

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pH and ORP benchtop meters 

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

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

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pH and ORP portable meters 

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

Take your pH and ORP measurements to the field without sacrificing accuracy and reliability. Our portable meters are rugged and waterproof, and provide the dependable performance that your demanding applications require.

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Buffers and solutions

view our buffer and 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.

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Support

Knowledge Base: Certificates of Analysis and SDS for Orion, ROSS, AQUAfast, AquaMate, and AquaSensors products.

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