2008DIN EN ISO 21068-1:2008 Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 1: General information and sample preparation (ISO 21068-1:2008); English version of DIN EN ISO 21068-1:2008-12
2004DIN 51079-1:2004 Testing of ceramic materials - Chemical analysis of silicon carbide used as raw material and as constituent in materials - Part 1: Decomposition with sodium carbonate and boric acid