Quality control methods for

Acknowledgements 
The World Health Organization acknowledges with thanks the following for 
their valuable contribution in the preparation of these test procedures: 
Professor I. Addae-Mensah, Legon/Accra, Ghana; Dr S.L. Ali, Eschborn, Ger-
many; Dr H. Blasius, Bonn, Germany; Dr H. Blume, Eschborn, Germany; Dr A. 
Bonati, Milan, Italy; Dr A.P. Carnat, Clermont-Ferrand, France; Dr H. Cranz, 
Brussels, Belgium; Dr B. Eberwein, Bonn, Germany; Dr D. Ennet, Berlin, 
Germany; Dr K. Feiden, Bonn, Germany; Dr L.T. Grady, Rockville, MD, USA; 
Professor E. Graf, Tubingen, Germany; Professor I. Kapetanidis, Geneva, 
Switzerland; Dr A. Kaukinen, Helsinki, Finland; Professor L. Kraus, Hamburg, 
Germany; Professor J. Lemli, Leuven, Belgium; Dr N. Linnenbrink, Nyon, 
Switzerland; Dr J.J. Liptak, Budapest, Hungary; Professor Lou Zhi-Cen, Beijing, 
China; Dr A.I. Miroshnikov, Moscow, Russian Federation; Dr Ng Tju Lik, 
Singapore; Professor S. Philianos, Athens, Greece; Professor J.D. Phillipson, 
London, England; Ms M.L. Rabouhans, London, England; Mr D.J. Roguet, 
Geneva, Switzerland; Mr F. Sauer, Brussels, Belgium; Professor H. Schilcher, 
Berlin, Germany; Professor S. Shibata, Tokyo, Japan; Dr B. Steinhoff, Bonn, 
Germany; Mr K. Uchida, Tokyo, Japan; Professor C.O.N. Wambebe, Abuja, 
Nigeria; Dr B. Warren, Woden, Australia; Mr D.A. Wilson, Edinburgh, Scotland; 
Dr Yang Zhong-Yuan, Wuhan, China; Dr J.H. Zwaving, Groningen, 
Netherlands. 
Thanks are also due to the European Pharmacopoeia Commission and the 
German Pharmaceutical Codex Commission for providing valuable background 
material. 

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Quality control methods for medicinal plant materials 
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Quality control methods for medicinal plant materials