Quality Assessment

Testing, Monitoring and Certification (TMC)

Testing body

The Fraunhofer WKI is a recognized testing laboratory for wood and wood-based materials as well as products made from them in accordance with national and international regulations:

  • Accreditation according to ISO/IEC 17025 by the national accreditation body of the Federal Republic of Germany “Deutsche Akkreditierungsstelle (DAkkS)”
  • Recognition according to the Lower Saxony Building Code (NBauO) by the Ministry for Social Affairs, Health and Gender Equality of Lower Saxony
  • Recognition according to EU Construction Products Regulation by the the German technical approval body “Deutsches Institut für Bautechnik (DIBt)”
  • Recognition according to California Code of Regulations (ATCM) by the California Air Resources Board (ARB)
  • Recognition according to Japanese Industrial Standards (JIS) and Japanese Agricultural Standards (JAS) by the Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT)

Formaldehyde emissions

Conventional wood-based materials and other building materials often contain binders containing formaldehyde. The EU classified formaldehyde as “presumed to have carcinogenic potential for humans” in 2014. Products may only be marketed in EU member states if their formaldehyde emission is tested according to specified methods and complies with the national limit value. There are also legal requirements in many non-European countries. We offer testing for the following products:

  • Europe | European Standards (EN): wood-based materials
  • USA | ASTM Standards: wood-based materials
  • Japan | Japanese Industrial Standards (JIS), Japanese Agricultural Standards (JAS): wood-based materials, solid wood products, wallpaper, varnishes

We also use our many years of experience for the new and further development of formaldehyde test methods.

Research focus “Formaldehyde test methods”

Mechanical properties

Building materials must be sufficiently strong to fulfill their purpose. We carry out type tests (“Initial Type Test (ITT)”) as well as many other tests. Our portfolio includes various material characteristic tests, long-term tests, investigations of the influences of constant and alternating climates and round-robin tests. We offer tests for the following products:

  • Europe | European Standards (EN): wood-based materials, gypsum boards and cement-bonded particleboards, thermal insulation materials, walls and wall elements of wood panel construction, windows and doors, floor coverings.
  • USA | ASTM Standards: wood based materials

Structural bonding

Bonding must be safe. Particularly in load-bearing timber construction, timber building materials and their structural connections must meet high requirements.

We offer tests for the following products:

  • Germany | Construction Products List A Part 1 or general building authority approval: adhesives for load-bearing timber construction components.
  • Europe | European standards (EN): adhesives for load-bearing and non-load-bearing timber components, timber structures (made of glued laminated timber, laminated beams), parquet adhesives

We also use our many years of experience for the new and further development of adhesive systems for wood-based material production and wood construction. 

Research focus “Bonding, adhesion, adhesives”

Further information


Here you will find a current overview of the standards according to which we are allowed to test and certify as part of our flexible DAkks accreditation.

Document management

We offer our customers a globally accessible content server for viewing, archiving and downloading inspection, surveillance and certification documents free of charge.

Accreditations and Recognitions

Here you will find details of the accreditations and recognitions of our testing, monitoring and certification body.