The EM-Tec CXS-5C calibration standard includes 5 reference materials and a 200mesh copper grid All mounted in a compact Ø12.7mm standard aluminum pin stub. The 200mesh copper grid acts as an image size reference and with the aluminum pin stub it serves as a Cu/Al reference for detector gain/zero calibration. Intended for: EDS detector performance, light element detection, EDS detector resolution, EDS detector calibration and quantitative analysis test.Reference materials: Stainless steel (SRM 1155), Sio2, Mn, B and C. 200mesh copper grid.