DELTA is certified by the Danish Accreditation organisation DANAK under the ISO/IEC 17025 standard for

“General requirements for the competence of testing and calibration laboratories.”

On the web page linked to above, enter 100 (this is the company number for DELTA)  in the search field for “Registrationnumber”.

Under this standard, DELTA is specifically certified with respect to Wind Turbine Measurements and many other methods in this list of methods.  A search for 61400 in this list of methods will show the DELTA’s accreditations for wind turbine noise.

In addition, conformance to relevant acoustic Type 1 standards for noiseLAB and noiseLAB Wind are tested by an external indepedent laboratory.