double diffusion


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Related to double diffusion: Ouchterlony test

double diffusion

[‚dəb·əl də′fyü·zhən]
(fluid mechanics)
A type of convective transport in fluids that depends on the difference in diffusion rates of at least two density-affecting components. Also, it is necessary to have an unstable or top-heavy distribution of one component. For example, in oceanography, the two components are heat and dissolved salts, and the unstable component is the slower-diffusing salt.
References in periodicals archive ?
Kniep, Phase formation and morphology of calcium phosphate-gelatine-composites grown by double diffusion technique: the influence of fluoride.
A way to overcome these limitations is to combine several tests [2] and the most used approach is initial screening with latex agglutination, double diffusion, indirect hemagglutination, and enzyme-linked immunosorbent assay, followed by confirmatory tests using specific antigens, for example, the antigen 5 immunoelectrophoresis and immunoblotting [3].