Fluoride Half Cell ISE

The EDT directION Fluoride Half Cell ion selective electrode has a solid state Crystalline membrane and has no internal filling solution.

Features:

• Solid State Electrode
• No internal Filling solutions required
• Rugged Robust and Maintenance free
• Waterproof and Submersible
• Fixed or Detachable lead versions
• Compatible will all pH or Ion meters
• Long life and Low Cost

Response, stability and lifetime are superior to any other make of Fluoride ISE available. It requires the use of a double junction reference electrode which has its outer chamber filled with Potassium Chloride. The electrode is designed for the detection and analysis of Fluoride ions in aqueous solutions and is suitable for use in the laboratory and in on line analysers.

Please note that both the ISE and the reference electrode need to be placed in the standards or samples simultaneously. They should also not be more than around 10cm apart. The side filling cap of the double junction reference electrode should be open during measurements and closed during storage .

Potassium Chloride (4M) is an ideal outer filling solution for Fluoride analysis. The EDT Half Cell ISE can be used immediately but pre-soaking for 5 minutes in a 100 ppm Fluoride solution along with the double junction reference electrode is recommended.

Ionic Strength Adjustment Buffer (TISAB) should be used. This is because the ionic strength of the standards and solutions should be kept constant between all standards and samples. No temperature correction is possible it is therefore important that all standards and samples should be measured at the same temperature to ensure that temperature effects are eliminated.

Begin calibration from the lowest concentration standard to avoid cross contamination. Calibration should cover the anticipated range of the samples. Rinse tips of both electrodes with de-ionised water between measurements and dab off excess water.

More Info:

When the response time or slope of your crystalline ISE reduces you can clean the tip with Methanol using a cotton bud.

To save valuable time and give confidence in the quality of your results, use EDT directION Stock Standards and Ionic Strength Adjustment Buffers (ISABs).

For Quick Ion analysis for under £500 use our ION Concentration Calculator.

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