The EM-Tec CXS-5BE 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: Back Scattered Electron Detector setup and performance, GSR software calibration, EDS detector set-up.Reference materials: Au, Nb, Ge, Si and C. 200µm copper Faraday cup.