The EM-Tec RXS-10RA reference standard includes 10 reference compounds and a 200µm aperture copper Faraday cup. All mounted in a compact Ø12.7mm standard aluminum pin stub. Intended for performance testing for Raman mineral analysis.Reference materials: Silica, Quartz, Aragonite, Calcite, Chalcedony, Pyrite, Marcasite, Rutile, Anastase and Brookite. 200µm copper Faraday cup.