Ion-Selective and Gas Sensitive Electrodes

Ion-Selective and Gas Sensitive Electrodes

Product Details:

  • Size Standard: 120mm - 150mm length (varies by model)
  • Usage Laboratory, field analysis, water testing
  • Automatic Grade Manual
  • Application Water analysis, environmental monitoring, pharmaceutical, food industry
  • IP Rating IP65 (electrode portion) - water resistant
  • Battery Life Not Applicable (external meter determines battery)
  • Features High selectivity, rapid response, easy maintenance, long life span
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Ion-Selective and Gas Sensitive Electrodes Product Specifications

  • Glass, Epoxy, Polymeric body depending on model
  • Ion-Selective Electrode, Gas Sensitive Electrode
  • BNC, Banana Plug, or customized (depends on meter compatibility)
  • External (Electrode output displayed via compatible meters)
  • Wired (to signal processing device/potentiometer)
  • No internal power; requires potentiometer or ion meter
  • Transparent, White, or Black (model-specific)
  • Measurement of specific ions or gases in solutions
  • High selectivity, rapid response, easy maintenance, long life span
  • Water analysis, environmental monitoring, pharmaceutical, food industry
  • High; typical detection limit: 10^-6 M (varies with ion type)
  • IP65 (electrode portion) - water resistant
  • Varies with model; suitable for analytical scale measurements
  • Not Required / External for signal processing
  • Not Applicable (external meter determines battery)
  • Manual
  • Analog or Digital (with compatible meter)
  • Standard: 120mm - 150mm length (varies by model)
  • Laboratory, field analysis, water testing
  • Specified by model; often KCl or custom electrolyte (supplied)
  • Clean after use, regular calibration, replace membrane/filling solution as specified
  • Yes
  • 5°C to 40°C
  • Solid state, liquid membrane, glass membrane (model dependent)
  • Optimized design for minimal interference from non-target ions
  • as low as 10^-6 M (depending on application)
  • Frequent (before each measurement for best precision)
  • Approx. 20-60 seconds (varies by ion/gas)
  • Typically >2ml for accurate measurement
  • 1-2 years under optimal storage
  • Potential difference based on selective ion permeability / gas diffusion
  • Electrode, instruction manual, calibration solutions (optional)
  • Membrane type, body material, connector type, cable length
  • Ion meter, pH meter with ISE/BNC input, benchtop or portable analyzers
  • Store wet (for glass ISE); cap securely, room temperature
  • BNC Standard (others available upon request)

Product Description

Ion-Selective and Gas Sensitive Electrodes:

Ion selective and gas sensitive electrodes allow quick and easy determination of concentration and activity of a variety of dissolved ions and gases. Ion concentration measurement is vital in a wide range of applications, some common examples are calcium content of milk, chloride in food and fluoride in toothpaste.

METTLER TOLEDO offers one of the most comprehensive ISE portfolios in the market, covering 19 ion species and 3 gases. The robust design, the easy maintenance and long lifetime make them ideal for any user and almost any application. 

perfect ION ion selective combination electrodes guarantee top precision and easy handling. Thanks to the Click and Clear reference junction stable, drift-free readings, even in dirty or viscous samples, are assured. In addition, replacing or refilling the electrolyte has never been so easy. 
DX series ion selective half-cells consist of two elements: a universal shaft and an ion-specific membrane module. This module may be exchanged allowing you to measure the ion of your choice. Just order the membrane kit specific for that ion, mount the new module onto the shaft of your ISE half-cell, and you have a new ISE! 

The METTLER TOLEDO ISE offering includes all solutions you need to measure ion concentration: dedicated electrolytes in handy sized bottles, high precision ion calibration standards and ionic strength adjustment solutions. Comprehensive user guides as well as application notes guide you through the system setup and analysis, even for the most challenging of applications. 

In combination to the electrodes, METTLER TOLEDO offers easy to use portable ion meters as well as bench-top meters with the full ion functionality. The comfort of SevenGo Duo pro and SevenExcellence is unbeaten till today





Advanced Measurement Principle

The electrodes operate on the basis of a potential difference generated by selective ion permeability or gas diffusion across specialized membranes. This mechanism ensures high specificity for the target analyte and minimizes interference from non-target ions, which is crucial for achieving accurate and reliable measurements in a range of applications.


Flexible Design and Compatibility

Our electrodes come in various membrane typessolid state, liquid, or glasssuited for different ions and gases. The standard BNC connector provides seamless compatibility with most ion or pH meters, whether benchtop or portable, and they can be further customized for connector type, cable length, or body material based on user requirements.


Ease of Use and Maintenance

Routine cleaning and calibration are simple processes that ensure ongoing accuracy. Maintaining the appropriate electrode filling solution and securely capping glass ISE models when not in use helps preserve the electrodes high sensitivity and extends its shelf life, making it suitable for repeated and long-term use.

FAQs of Ion-Selective and Gas Sensitive Electrodes:


Q: How do Ion-Selective and Gas Sensitive Electrodes measure specific ions or gases?

A: These electrodes measure the potential difference generated by selective ion permeability or gas diffusion across the membrane, which is proportional to the concentration of the target ion or gas in the sample.

Q: What is the recommended process for electrode calibration and maintenance?

A: Frequent calibration is recommendedideally before each measurementfor best accuracy. After use, the electrode should be cleaned, and the membrane or filling solution replaced as specified to maintain precision and longevity.

Q: When should the electrodes be stored wet, and why is this important?

A: Glass membrane ion-selective electrodes should always be stored wet and capped securely at room temperature to maintain membrane hydration and response speed. Other types may have different storage needs as per the model manual.

Q: Where can these electrodes be used effectively?

A: They are suitable for laboratory, field analysis, and a variety of industries including water testing, environmental monitoring, pharmaceuticals, and food analysis, particularly where accurate ion or gas measurement is needed.

Q: What are the benefits of customizable electrode parameters?

A: Customizing membrane type, body material, and connectors ensures the electrode best fits specific measurement environments, improving compatibility, durability, and performance across diverse applications.

Q: How much sample volume is required for accurate measurement?

A: Typically, a minimum of 2ml of the sample is necessary to achieve precise and reliable ion or gas determinations, although this may vary according to electrode design and application.

Q: What makes these electrodes advantageous in terms of selectivity and interference?

A: The optimized membrane design provides high selectivity for the target ion or gas, significantly minimizing cross-sensitivity and interference from other substances, ensuring accurate analytical results.

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