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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  • Thermo Scientific Orion

    Save time by eliminating additional equipment set-up, titrations and calculations. The Thermo Scientific™ Orion™ Total Alkalinity Test Kit provides two-step direct measurement of total alkalinity and pH using a pH electrode. Direct reading of total alkalinity from 0 to 200ppm as…

  • labForce® (powered by Thomas Scientific)

    The labForce® pHE-07 Flat pH Electrode is a general purpose, lab or field electrode offering affordable, low maintenance performance for water applications where a flat shaped pH sensor is more suitable. Features: Plastic body with standard 12mm diameter and 120mm length. Flat pH…

  • 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…

  • All-in-One double junction electrode features a built-in temperature sensor for taking readings with Automatic Temperature Compensation (ATC). For most applications, including dirty water, heavy metals and organics applications. Electrode is 12 mm diameter with a 3 foot cable Refillable…

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    Thermo Scientific Orion

    Ross® Sure-Flow Easy cleaning in waste-waters, food samples, colloids, soils and slurries Has optimum flow rate for high purity waters, drinking waters and buffers Produces fast, stable responses in samples that vary in temperature pH range is 0-14 over a temperature range of…

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    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…

  • 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. …

  • 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…

  • Dry Contact Technology High accuracy Unlimited shelf life, can be stored dry No pre-conditioning or user maintenance required Robust, rugged and reliable Dry Contact Technology replaces traditional liquid or gel-filled ISE’s. Dry contact electrodes require no…

  • Sensorex

    Allows pH signal to be carried up to 1,000 feet Boosts signals of aging electrodes, providing readable, measurable results Interfaces with most pH meters Battery operated This pre-amplifier works with most pH meters, controllers and data acquisition systems. Input and output…

  • Thermo Scientific Orion

    Specifically for Thermo Orion A+ series meters Enables use of any BNC type electrode without temperature sensor (triode) to take advantage of meter’s automatic temperature compensation.

  • Always Ready Well-equipped for challenging tasks. The highly robust PEEK shaft in combination with the open junction makes the InLab Expert both resilient and easy to handle. Its solid reference electrolyte requires no refilling and is always ready for use. If highest performance is expected,…

  • TRUEscience

    SMART Cap for connection to the TRUEscience app on Android devices. This device transmits readings from the electrode to the App on your tablet. (Tablet not supplied). The TRUEscience SMART Cap comes without an electrode so you can purchase the pH, dissolved oxygen, redox or ion selective…

  • BlueLine combination electrode, Plastic shaft, fibre-junction, gel electrolyte, Ag/AgCl-reference system, temp.-sensor NTC 30 kOhm, cylinder membrane, A glass, 1 m fixed cable with DIN- +4-mm banana plug, length 120 mm, 12 mm Ø, -5...+80 °C, 0...14 pH

  • pH-combination electrode with 1 m fixed cable, Microelectrode, glass shaft, platinum junction, electrolyte KCl 3 mol/l, Ag/AgCl-reference system, sphere membrane, A-glass, DIN plug, tapper NS 7.5, length 96 mm, 5 mm Ø, -5...+100 °C, 0...14 pH

  • Oakton combination electrodes are available in a variety of styles to meet the needs of your application. Epoxy electrodes are impact resistant and provide exellent durability for field applications. Glass electrodes withstand aggressive chemicals. Choose junction and tip style based on the needs…

  • This double junction electrode is for most applications, including dirty water, heavy metals and organics applications. It has a wider range for high sodium/high pH applications. Electrode is 12 mm diameter, and has a BNC connector with a 3 foot cable Epoxy body, sealed Includes a…

  • Thermo Scientific Orion

    The patented reference system and the double junction design keeps silver ions from contacting the sample. These electrodes are non-refillable, offering the benefits of ease of use and minimal preparation.

  • pH combination electrode with plug head, Glass shaft, platinum junction, electrolyte KCl 3 mol/l, Silamid® reference system, sphere membrane, A-glass, length 120 mm, 12 mm Ø, -5...+100 °C, 0...14 pH

  • Accept the Challenge The measurement of solid or semi-solid samples is challenging and requires sensors that are robust, ensure proper electrolyte flow and are easy to clean. Sensors with these properties are often requested for food or cosmetic applications. A special membrane glass and…

  • The Thermo Scientific Orion Storage Sleeve and Base is for use with pH electrodes that are 120mm or less in length that have a diameter of 12mm. The sleeve protects your electrode from breakage when not in use and will not tip, due to the weighted removable base. As an additional convenience, the…

  • Thermo Scientific Orion

    Low maintenance and refillable electrodes that features an isolated Ag/AgCl reference system, so silver does not make contact with the sample.

  • Plug & Play combined glass pH electrode with a fixed ground-glass sleeve junction. The large sleeve junction provides a stable measurement signal thanks to a uniform flow of electrolyte. The junction is hardly blocked by precipitates and is easy to clean. Direct pH measurement and acid/base…

  • 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

  • Measure pH in samples as small as 10 microliters (1/10 of a drop) with great accuracy Compatible with most laboratory pH meters Well-suited for biological assays; use in containers such as 96-well plates, microcentrifuge tubes, culture tubes, serum cups, and NMR tubes Virtually…

  • pH combination electrode with plug head, Glass shaft, platinum junction, electrolyte KCl 3 mol/l, Silamid®-reference system, sphere membrane, A-glass, tapper NS 14.5, length 103 mm 10 mm Ø, -5...+100 °C, 0...14 pH

  • Milwaukee Instruments

    Milwaukee has a wide assortment of pH, ORP, Conductivity and other specialty sensors to meet all your specific requirements. Finding the right electrode for a specific application is a very important task and in order to solve this selection problem it is important to consider the following:…

  • IDS ORP electrodes are used to measure oxidation or reduction potentials in waterous solutions - with integrated temperature sensor Safe measured values due to signal processing in the sensor Integrated temperature sensor NTC 30 kOhm for precise value documentation Best possible GLP…

  • The FillTrode is a robust pH electrode with a plastic shaft and a flat membrane. Use this electrode for your toughest applications! Benefits Robust pH electrode with plastic shaft Multiple applications, thanks to its flat membrane: (e.g. for viscous media) Easy to clean The ring…

  • TRUEscience white smart cap supplied with Epoxy bodied pH electrode. Also requires compatible Android device or can be added to an existing kit for measuring multiple samples simultaneously. 1x smart pH cap in White, with beaker clip and temperature sensor attached 1x Epoxy bodied double…

  • Conduct routine pH measurements with the Thermo Scientific™ Orion™ Economy Series pH Combination Electrode, a routine wick junction, gel-filled electrode. Its unbreakable epoxy body extends beyond the pH sensing glass bulb for rugged conditions. It provides durability for lab or field…

  • labForce® (powered by Thomas Scientific)

    The labForce® pHE-05 3-in-1 pH/Temp. Electrode Sensor is a temperature compensated pH Electrode, is ideal for precise regular water solutions and water pH testing in scientific research and quality control. This electrode is compatible with TRIS buffer solutions. The unique blue…

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