The testing laboratory of AB Dvarčionių Keramika has maintained its accreditation since 1999-03-24. The accreditation certificate No. LA.01.025 was issued by the Lithuanian National Accreditation Bureau.

It verifies that the testing laboratory of AB Dvarčionių Keramika conforms to the requirements of standard LST EN ISO/IEC 17025:2006 ,"Competence of testing and calibrating laboratories. General requirements (ISO/IEC 17025:1999)" and is accredited to conduct tests and sampling of ceramic tiles.

The laboratory performs all tests in the accredited field both for the company needs and for external customers.