Standards are suitable for electron-beam energy dispersive or wavelength dispersive X-ray microanalysis systems. Set of 18 standards includes Al, BaF2, BaSO4, Bi, BN, C , CaCO3, CaSO4, FeS2, InP, KBr, KCl, MgO, NaCl, Se, SiO2, Ti, V, and a Faraday cup. The standards are polished to a 0.25 micron diamond finish and carbon coated and are supplied with fully authenticated certificates of analyses and a location map for standard identification. A Mounted in 32mm brass block.