This Technical Specification gives guidance for the assessment of conformity of materials (compounds/formulations), products and assemblies in accordance with EN 1455-1 intended to be included in the manufacturer’s quality plan as part of the quality management system and for the establishment of thirdparty certification procedures. NOTE 1 It is recommended that the quality management system conforms to or is no less stringent than the relevant requirements to EN ISO 9001 . NOTE 2 If third-party certification is involved, it is recommended that the certification body is accredited to EN 45011 , EN 45012  or EN ISO/IEC 17021 , as applicable. NOTE 3 In order to help the reader, a basic test matrix is given in Annex A. In conjunction with EN 1455-1, this document is applicable to solid-wall piping systems made of acrylonitrilebutadiene- styrene (ABS) intended to be used for the following purposes: - for soil and waste discharge (low and high temperature) inside buildings (application area code "B"); - for soil and waste discharge (low and high temperature) inside buildings and buried in ground within the building structure (application area code "BD"). NOTE 4 This is reflected in the marking of products by "B" or "BD".