Surface active agents - Determination of the 1,4-dioxane content in alkyl-ethoxy-sulfate products by GLC/head-space-procedure; German version EN 12974:1999— 11 стр.
Petroleum and natural gas industries - Cements and materials for well cementing - Part 6: Methods for determining the static gel strength of cement formulations (ISO 10426-6:2008); English version EN ISO 10426-6:2008— 15 стр.