differential detector

in chromatography
https://doi.org/10.1351/goldbook.D01703
A device which measures the instantaneous difference in the composition of the column @E01910@.
Sources:
Orange Book, 2nd ed., p. 99 [Terms]
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 849 [Terms] [Paper]