The EM-Tec CXS-5LE calibration standard includes 5 reference materials and a 200µm aperture copper Faraday cup. All mounted in a compact Ø12.7mm standard aluminum pin stub. The copper Faraday cup and aluminum pin stub can serve as a Cu/Al reference for detector gain/zero calibration. Intended for: light element performance test and EDS detector setup; includes: B, C, N, O and F in stable compounds.Reference materials: CaB6, SiC, CrN, Fe2o3 and CaF2. 200µm copper Faraday cup.