Trust your product quality The Epsilon 4, an energy dispersive X-ray fluorescence (EDXRF) benchtop spectrometer, offers non-destructive elemental analyses of impurities in active pharmaceutical ingredients and excipients in line with the recommendations in ICH Q3D, USP, USP and USP. Applications that have traditionally been performed by ICP and AAS are now possible without the need for time-consuming and costly sample preparation.