Media type: E-Article Title: Quality assurance challenge 11 Contributor: Reichenbächer, Manfred; Einax, Jürgen W. Published: Springer Science and Business Media LLC, 2013 Published in: Analytical and Bioanalytical Chemistry, 405 (2013) 7, Seite 2273-2275 Language: English DOI: 10.1007/s00216-012-6632-0 ISSN: 1618-2642; 1618-2650 Keywords: Biochemistry ; Analytical Chemistry Origination: Footnote: