The Kunststoff-Institut Lüdenscheid has successfully completed reaccreditation with two companies. At the same time, the conversion to the comprehensively amended revision of DIN EN ISO/IEC 17025:2018-3 took place, making the Lüdenscheid-based company the first plastics laboratory in Germany to successfully complete the conversion. Among other things, the website www.entscheidungsregel.de was created, which can also be used by other laboratories. The certificates of the flexible accreditations are available in the download area on the institute's website.