Detector which responds to a related group of components in the effluent.
Example: Spectroscopic detector that monitors all compounds with an absorbance at a particular wavelength.
Source:
PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 201 (https://doi.org/10.1515/pac-2017-0111)