relative counting

in nuclear chemistry
https://doi.org/10.1351/goldbook.R05261
A measurement in which the @[email protected] of a @[email protected] is derived from the ratio between the @[email protected] rates observed for the @[email protected] and for a @[email protected] of known activity.
Source:
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2525 [Terms] [Paper]