Surface active agents - Detergents - Determination of cationic-active matter content; Part 1: High-molecular-mass cationic-active matter (ISO 2871-1-1988); German version EN ISO 2871-1:1994— 4 стр.
Petroleum and natural gas industries - Drilling and production equipment - Wellhead and christmas tree equipment (ISO 10423:2009); English version EN ISO 10423:2009, only on CD-ROM— 456 стр.
Surface active agents - Detergents - Determination of cationic-active matter content - Part 1: High-molecular-mass cationic-active matter (ISO 2871-1:2010); German version EN ISO 2871-1:2010— 8 стр.
Surface active agents - Determination of quaternary ammonium surface active agents in raw materials and formulated products - Potentiometric two-phase titration method; German version EN 14668:2005— 15 стр.
Surface active agents - Detergents - Determination of cationic-active matter content - Part 1: High-molecular-mass cationic-active matter (ISO 2871-1:2010); German version EN ISO 2871-1:2010— 8 стр.