Salt Bridge - Glass Tube Bridges

Glass Tube Bridges

One type of salt bridge consists of a U-shaped glass tube filled with a relatively inert electrolyte; usually potassium chloride or sodium chloride is used, although the diagram here illustrates the use of a potassium nitrate solution. The electrolyte is often gelified with agar to help prevent the intermixing of fluids which might otherwise occur.

The conductivity of a glass tube bridge depends mostly on the concentration of the electrolyte solution. An increase in concentration below saturation increases conductivity. Beyond-saturation electrolyte content and narrow tube diameter may both lower conductivity.

Read more about this topic:  Salt Bridge

Famous quotes containing the words glass, tube and/or bridges:

    Before the beginning of years
    There came to the making of man
    Time, with a gift of tears;
    Grief, with a glass that ran;
    —A.C. (Algernon Charles)

    Even crushed against his brother in the Tube the average Englishman pretends desperately that he is alone.
    Germaine Greer (b. 1939)

    As night is withdrawn
    From these sweet-springing meads and bursting boughs of May,
    Dream, while the innumerable choir of day
    Welcome the dawn.
    —Robert Bridges (1844–1930)