The quality control is an integral part of Grüner’s history. The in-house testing laboratory, provided with instruments to carry out physical and chemical tests, allows controlling the quality of raw materials and the compliance of finished products with customers’ expectations.

In the lab you can find electronic balance, tensorcheck, rheocheck and microscope for dimensional controls. All instruments are periodically checked by authorised SIT centres.

Since 1997 we obtained the ISO 9002 now ISO 9001, after we obtained the AVSQ’94 certification, the ISO/TS 16949:2002 certification, finally in 2008 we obtained the ISO 14000 Environment Certification.