DS EN 12566-6:2013
DS EN 12566-6:2013 Small Wastewater Treatment Systems For Up To 50 Pt - Part 6: Prefabricated Treatment Units For Septic Tank Effluent Defines requirements, test methods, evaluation of conformity and marking for prefabricated secondary treatment units used for the treatment of effluent from septic tanks according to EN 12566-1 or EN