93 laboratories in Germany are accredited by DAKKS under ISO/IEC 17025 to perform ISO 11905-1 testing. These labs commonly handle Water, Effluent matrices. Most frequently tested analytes via this method in Germany: Chemischer Sauerstoffbedarf (Csb), Biologischer Sauerstoffbedarf (Bsb 5), Gesamter Gebundener Stickstoff. From the accredited scope text: “ISO 11905-1 (H 36) 1998-08 Wasserbeschaffenheit - Bestimmung von Stickstoff - Teil 1: Bestimmung von Stickstoff nach oxidativem Aufschluß mit Peroxodisulfat DIN EN ISO 14402 (H 37) 1999-12 Wasserbesch” “ISO 11905-1 (H 36) 1998-08 Bestimmung von Stickstoff nach oxidativem Aufschluss mit Peroxodisulfat DIN 38409-H 41 1980-12 Bestimmung des chemischen Sauerstoffbedarfs (CSB) im Bereich über 15 mg/l DIN” “ISO 11905-1: 1998-08 (H 36) Adsorbierbare organische Halogene (AOX) DIN EN ISO 9562: 2005-02 (H 14) L L L DIN 38409-H 22: 2001-02 Teilbereich 6: Gaschromatografische Verfahren Parameter Verfahren Abw” “ISO 11905-1: 1998-08 (H 36) Adsorbable organic halogens (AOX) DIN EN 150 9562: 2005-02 (H 14) I a a Section 6: Gas chromatographic methods Parameter Method Was Sur Raw Volatile halogenated hydrocarbon”
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ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories. Accreditation to this standard provides independent confirmation that a laboratory operates a quality management system and is technically competent to produce valid results within its declared scope.