The GC detector EPED (Echelle Plasma Emission Detector) is an element-specific detector with high sensitivity and selectivity for sulphur and the halogens chlorine, bromine, fluorine and iodine. It combines a long term stable pulsing plasma cell with a high resolution Echelle spectrometer. Compared to the also element-specific AED (atomic emission detector), the detection limits are lower by a factor of 5 - 10 (detection limits in pg/s: S 0.33, F 3.0, Cl 0.9, Br < 4, I < 1). The low-maintenance detector shows good reproducibility and good linearity over a wide concentration range (3 - 4 decades). The advantage of the EPED over a mass spectrometric detector is the equimolar response of the Echelle spectrometer, making quantitation of samples without standards possible as you need just one standard per element for calibration. Fields of application are the currently very up-to-date PFAS analysis (per- and polyfluorinated alkyl substances), the analysis of brominated flame retardants as well as sulfur containing pesticides, the sulfur content of gasoline and diesel, and many more.