In Fluoride Selective Electrode?

A fluoride selective electrode is a type of ion selective electrode sensitive to the concentration of the fluoride ion. A common example is the lanthanum fluoride electrode.

What is the principle of ion selective electrode?

Principle of ion-selective electrode (I.S.E.) ... consists of a thin membrane across which only the intended ion can be transported. The transport of ions from a high conc. to a low one through a selective binding with some sites within the membrane creates a potential difference.

Which pH is suitable for a fluoride ion selective electrode?

pH Range: The Fluoride Electrode should be used in the pH range 4-9 to eliminate OH- interference. Time: in solution in less than 4s. When, however, the electrode is removed from one solution and placed in another of different fluoride concentration, it may take up to 30s to equilibrate.