Media type: E-Article Title: Quality assurance challenge 8 Contributor: Reichenbächer, Manfred; Einax, Jürgen W. imprint: Springer Science and Business Media LLC, 2009 Published in: Analytical and Bioanalytical Chemistry Language: English DOI: 10.1007/s00216-009-2811-z ISSN: 1618-2642; 1618-2650 Keywords: Biochemistry ; Analytical Chemistry Origination: Footnote: