Many Riester products are created through close cooperation with practitioners from government research centres and university hospitals. Accreditation is an important part of the Riester business. All products carry the CE-mark, and no product leaves its premises until it passes exacting quality tests; Riester sets higher internal standards than those required by guidelines.
Riester has been ISO 9001 certified since 1997. It also carries quality management certification ISO 13845:2003 and the quality assurance certification Annex II, section 3 of directive 93/42/EEC.