Term: packing
https://doi.org/10.1351/goldbook.P04394

Definition:
The active solid, stationary liquid plus solid support, or swollen gel put in the column. The term packing refers to the conditions existing before the chromatographic run is started (i.e. to the material introduced into the column), whereas the stationary phase refers to the conditions during the run.

Related Terms:
1) totally porous packing (<em>in chromatography</em>) (http://doi.org/10.1351/goldbook.T06411).
2) pellicular packing (<em>in chromatography</em>) (<em>in chromatography</em>) (http://doi.org/10.1351/goldbook.P04469).
3) active solid (<em>in chromatography</em>) (<em>in chromatography</em>) (http://doi.org/10.1351/goldbook.A00109).
4) gel (<em>in chromatography</em>) (<em>in chromatography</em>) (http://doi.org/10.1351/goldbook.G02600).

Source: Orange Book, 2nd ed., p. 97 (https://media.iupac.org/publications/analytical_compendium/)

Citation: 'packing' 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.P04394

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