plate height, Heff

in chromatography
abbreviation: HETP
https://doi.org/10.1351/goldbook.P04693
The column length (L) divided by the plate number: H=LN It is also called the height equivalent to one theoretical plate (HETP).
Source:
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 848 [Terms] [Paper]