Salt Bridge - Filter Paper Bridges

Filter Paper Bridges

The other type of salt bridge consists of a filter paper, also soaked with a relatively inert electrolyte, usually potassium chloride or sodium chloride because they are chemically inert. No gelification agent is required as the filter paper provides a solid medium for conduction.

Conductivity of this kind of salt bridge depends on a number of factors: the concentration of the electrolyte solution, the texture of the filter paper and the absorbing ability of the filter paper. Generally, smoother texture and higher absorbency equates to higher conductivity.

A porous disk or other porous barrier between the two half-cells may be used instead of a salt bridge; however, they basically serve the same purpose.

Read more about this topic:  Salt Bridge

Famous quotes containing the words paper and/or bridges:

    Two heavy trestles, and a board
    Where Sato’s gift, a changeless sword,
    By pen and paper lies,
    That it may moralise
    My days out of their aimlessness.
    William Butler Yeats (1865–1939)

    Awake! the land is scattered with light, and see,
    Uncanopied sleep is flying from field and tree:
    —Robert Bridges (1844–1930)