pH & Ion Electrodes

pH & Ion Electrodes are critical tools in the measurement of acidity, alkalinity, and ion concentration in various solutions.

Various types of pH electrodes offer precise and quick readings, which are essential for a wide range of scientific applications, from environmental monitoring and medical diagnostics.

The diversity in electrode types caters to specific measurement needs, ensuring accurate results across different mediums. With advancements in electrode technology, these instruments provide reliable performance in challenging conditions, including extreme pH ranges and non-aqueous solutions.

Their ease of use, combined with the ability to deliver rapid and accurate measurements, makes pH and ion electrodes indispensable in laboratories and fieldwork, facilitating research and quality control processes.

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pH Electrodes

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  • Genuine Hamilton electrolytes are needed to keep your laboratory sensors running smoothly. Complete the maintenance on your sensor by using Hamilton cleaning and storage solutions to ensure high accuracy and long life.

  • Electrode Stand Cantilever Type, Each

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    Thermo Scientific Orion

    Superior stability pH range 0-14 Temperature of 0°-100°C 3 M KCl filling solution supplied with electrode

  • Mettler Toledo

    Peek Shaft, Open Junction "Safelock" closing ring Silver ion trap pH-sensitive glass membrane Contains no poisonous heavy metals but consists solely of non-polluting silver/silver chloride components. An Argenthal element developed by Ingold provides a lead-off system which offers…

  • Backed by our commitment to accurate and precise measurement, the OHAUS Starter Series of electrodes are designed to produce exact results time and time again. The Starter Series includes pH, reference, oxidation-reduction potential (ORP), conductivity, dissolved oxygen (DO), and temperature…

  • Thermo Scientific Orion

    pH and temperature measurement with one electrode Versatile with chemically compatible glass body, refillable with ROSS 3M KCL solution or a fill solution compatible to your sample type Fast pH response even in samples at varying temperatures Compatible with Mettler-Toledo TM Five and…

  • pH/ORP electrodes are the most commonly used electrochemical sensors. At the same time, they provide the most sensitive measuring signals and must be serviced and calibrated on a routine basis. The concept of IDS sensors precisely takes effect here. Digital data transfer without interferences…

  • This sleeve-type, glass body pH electrode is liquid-filled, allowing for higher electrolyte flow than gel filled electrodes. The double junction is designed for a higher flow rate of liquid than typical annular or pin-type junctions, and applications include dirty water, heavy metals and organics. …

  • Solid State Technology Solid State electrodes have solid, homogeneous sensing elements. They are more rugged and easier to clean than glass or membrane sensors. Polishing strips for the solid state sensors are included with the electrode. Thomas also offers a half-cell version that…

  • Oakton

    Splashproof keypad Pushbutton pH/mV selection Simulates U.S. or NIST pH buffer values Oakton pH Simulator is an easy-to-use service tool for testing the accuracy of pH and ORP meters, controllers and transmitters.  Unit can simulate a variety of pH and mV values and it supports…

  • Dry Contact Technology Dry Contact Technology replaces traditional liquid or gel-filled ISE's. Dry contact electrodes require no preconditioning. Simply place electrode in a sample and read results. This innovative technology offers unlimited shelf life and greater measurement stability. …

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    Thermo Scientific Orion

    Ideal for field, plant, or educational applications Connector type: BNC Waterproof

  • Unique Glass Membrane - The PHE-17 pH electrode uses a micro cylindrical glass membrane (4mm in diameter), making micro-sample pH testing easier than ever, and can be tested in high-temperature samples (up to 212°F). The stainless steel protective cover ensures the durability of the slim glass…

  • Dry Contact Technology Dry Contact Technology replaces traditional liquid or gel-filled ISE's. Dry contact electrodes require no preconditioning. Simply place electrode in a sample and read results. This innovative technology offers unlimited shelf life and greater measurement stability. …

  • Hanna Instruments

    HANNA offers a wide range of combination pH and ORP electrodes specifically designed for needs of industrial users. In order to reduce contamination problems, all electrodes are gel or polymer filled and feature double-junction technology. The BNC connector allows quick and easy connection to…

  • Immersion depth is 2 mm, designed for NMR cells. pH range is 0-14. Temperature range is -5 to 100°C. Dimensions: 228 mm x 2.5 mm; tip diameter: 2.5 mm. Type reference: Ag/AgCl.

  • labForce® (powered by Thomas Scientific)

    Solid State Technology Solid State electrodes have solid, homogeneous sensing elements. They are more rugged and easier to clean than glass or membrane sensors. Polishing strips for the solid state sensors are included with the electrode. Thomas also offers a half-cell version that…

  • Solid State Technology Solid State electrodes have solid, homogeneous sensing elements. They are more rugged and easier to clean than glass or membrane sensors. Polishing strips for the solid state sensors are included with the electrode. Thomas also offers a half-cell version that…

  • The Orion 8411BN ROSS™ Sodium and Orion 8611BNWP ROSS Sodium Combination Electrodes allow sodium in aqueous solutions to be measured quickly, accurately, and economically. With its unique redox internal system, the ROSS electrode provides faster response, greater stability and accuracy than…

  • Thermo Scientific Orion

    Adapters for the Orion 3-, 4-, and 5-Star Series meters.

  • TRUEscience Item No. 1205230 TRUEscience Epoxy Redox Combination Electrode S7. Ceramic single junction silver/silver chloride reference Electrode only with electrode soaker bottle and storage solution 1x TRUEscience Epoxy Redox Combination Electrode with S7 connector 1x soaker bottle…

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    Thermo Scientific Orion

    ROSS, Half Cell ISE For determination of Na+ ion activity in concentrations from saturated to 10 -6 M (saturated to 0.02 ppm) Model 4210E63 ROSS electrode requires Thomas number 4153Q87 or 0732K95 reference electrode. Uses Orion 900004 fill solution, order as 4153F22. Accessories: Sodium…

  • Solutions to clean, store and fill electrodes Extend the life of your electrodes and maintain accurate readings Use cleaning and storage solution with any pH or ORP electrodes Electrode storage solution keeps pH/ORP electrode bulbs moist for faster, more accurate readings. Use…

  • labForce® (powered by Thomas Scientific)

    Unique Glass Membrane - The PHE-15 HF glass membrane, which has a faster response rate, better repeatability in strong acid samples, and resistant to hydrofluoric corrosion. Silver Ion Trap Reference System - The PHE-15 pH electrode uses a Silver Ion Trap reference system. On top of the Long-Life…

  • The spear tip design makes the LE427 ideal for solid samples such as meat, fruit, cheese, soil and many more than you could imagine! Puncture pH electrode with gel electrolyte and protective plastic cover Suitable for measurements of food and other solid and critical samples …

  • An electrode for determining the sodium concentration of samples such as food, biological fluids and cooling water. The sodium electrode has a similar construction to a normal pH electrode but uses membrane glass with a higher selectivity for sodium. The electrode has a fast response time and…

  • labForce® (powered by Thomas Scientific)

    The labForce® pH-01 Combination pH Electrode is an economical choice for a reliable combination pH electrode. Ideal for regular water solutions' pH measurement in scientific research, environmental monitoring, and quality control. Measurement Range: 0–14 pH, 0–80°C…

  • High quality cables with a variety of electrical connectors to retrofit with existing pH / ORP monitors.

  • 1198F01: TruLine pH 15; pH electrode with temperature, single-junction, 3 in 1, refillable, glass shaft with 1-m cable, BNC connector, 1 banana plug, NTC 30 kOhm. Dimensions = 120 mm length; 12 mm OD. 1198F02: TruLine pH 17; pH electrode no temperature, single-junction, combination,…

  • General purpose plastic electrode combines pH, reference and temperature. A rugged bulb, detachable bulb protector and replaceable junction (4136L60) provide for long life.

  • Sealed Ag-AgCl Reference, Epoxy Epoxy plastic body incorporates glass electrode and sealed Ag-AgCl reference electrode in a single stem Range pH 0 to 14, 0° to 100°C Usable at pressures from 0 to 100 psig (690 kPa) Offered in choice of types, each with US Standard or…

  • 1198F11: Science pHT-Pt; pH electrode with temperature, double-junction, Platinum junction, 3 in 1, glass shaft with 1-m cable, BNC connector, 1 banana plug, NTC 30 kOhm. Dimensions = 170 mm length; 12 mm OD. 1198F12: Science pHT-G; pH electrode with temperature, double-junction, 3 in 1,…

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