NF T73-290*NF EN 14668:2005 Surface active agents - Determination of quaternary ammonium surface active agents in raw materials and formulated products - Potentiometric two phase titration method
2005NF T73-290*NF EN 14668:2005 Surface active agents - Determination of quaternary ammonium surface active agents in raw materials and formulated products - Potentiometric two phase titration method