Term: Archibald's method
https://doi.org/10.1351/goldbook.A00428

Definition:
A sedimentation method based on the fact that at the meniscus and at the bottom of the centrifuge cell there is never a flux of the solute across a plane perpendicular to the radial direction and the equations characterizing the sedimentation equilibrium always apply there, even though the system as a whole may be far from equilibrium. The use of the term 'approach to sedimentation equilibrium' for Archibald's method is discouraged, since it has a more general meaning.

Related Terms:
1) sedimentation (http://doi.org/10.1351/goldbook.S05534).
2) sedimentation equilibrium (http://doi.org/10.1351/goldbook.S05536).

Source: Purple Book, 1st ed., p. 62 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: 'Archibald's method' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.A00428

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