bed volume

in chromatography
https://doi.org/10.1351/goldbook.B00625
Synonymous with column volume for a packed column.
Sources:
Orange Book, 2nd ed., p. 100 [Terms]
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 832 [Terms] [Paper]