impregnation

in chromatography
https://doi.org/10.1351/goldbook.I02992
The modification of the separation properties of the chromatographic bed used in @P04682@ by appropriate additives.
Source:
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 830 [Terms] [Paper]