Siebert + Knipschild have all necessary accreditations for the task as an approved independent certification and inspection body. Furthermore several standardization committees rely on our experience and know-how.  



Deutsches Institut für Bautechnik (DIBt) is an authority of the German federal state governments which ensures the uniform fulfillment of technical tasks in the field of public projects.



The laboratory of Siebert + Knipschild has got the international approval by the ILAC. The International Laboratory Accreditation Cooperation is an international cooperation of laboratory and inspection accreditation bodies formed more than 30 years ago to help remove technical barriers to trade.

ILAC writes on its website: "Through the application of national and international standards, government, procurers and consumers can have confidence in the calibration and test results, inspection reports and certifications provided".



Deutsche Akkreditierungsstelle GmbH (DAkkS) is the national accreditation body for the Federal Republic of Germany with its head office in Berlin. It assesses, certifies and monitors the technical competence of laboratories, certification and inspection bodies as an independent authority. In this context DAkkS makes an important contribution to the quality assurance of products and services, supports consumer trust and enhances the competitiveness of German companies.


Membership in normation boards

Membership in standardization committees: The know-how of Siebert + Knipschild is valued by the DIBt committee "Sewer Rehabilitation – Expert Committee Sewers A". Dipl.-Ing. Andreas Haacker is a committee member.