This Technical Specification gives guidance for the assessment of conformity of materials (compounds/formulations), products and assemblies in accordance with EN 1565 1 intended to be included in the manufacturer’s quality plan as part of the quality management system and for the establishment of third-party certification procedures.NOTE 1It is recommended that the quality management system conforms to or is no less stringent than the relevant requirements of EN ISO 9001 [1].NOTE 2If third-party certification is involved, it is recommended that the certification body is accredited to EN 45011 [2], EN 45012 [3] or EN ISO/IEC 17021 [4], as applicable.NOTE 3In order to help the reader, a basic test matrix is given in Annex A.In conjunction with EN 1565 1, this document is applicable to solid-wall piping systems made of styrene copolymer blends (SAN+PVC) 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) for both inside buildings and buried in ground within the building structure (application area code "BD").NOTE 4This is reflected in the marking of products by "B" or "BD".