The Physical-Chemical Transformer Diagnostics Department has implemented an internationally accredited quality system for the operations of testing and calibration laboratories. This quality system fulfils the demands of the following standards:

ISO/ IEC 17025:1999 General requirements for the competence of testing and calibration laboratories
ISO 9001:2000 Quality management systems - Requirements

RvA - Raad voor Accreditatie SC 00 NKO / STERIN / STERLAB Common Criteria
RvA - Raad voor Accreditatie SC 01 NKO / STERIN / STERLAB Supplementary Criteria for Testing Laboratories
The implementation of this quality system ensures the independent, consistent, and appropriate level of quality of all the Department's services.

The quality system documentation, which includes the Accreditation Certificate No. L399, the quality manual, reference documents, forms, instructions, records, and numerous external documents of general and technical character, is kept at the Physical-Chemical Transformer Diagnostics Department of the Institute.

The Accreditation Certificate was first granted to the Department on 28 March 2001; thereafter it was renewed on 19 January 2005 and it is valid until 28 March 2009.