Round-filter chromatography

From Anthroposophy

Circular or round-filter chromatography is a picture forming method, also referenced as the Chroma test, developed in 1953 by Ehrenfried Pfeiffer for the research on soil and compost.


References and further reading

  • Ehrenfried Pfeiffer:
    • Eine qualitativ chromatographische Methode zur Bestimmung biologischer Werte (Parts I and II) (1959)
    • 'Chromatography Applied to Quality Testing' (1984)
  • Helmut Voitl, Elisabeth Guggenberger: Der Chroma-Boden-Test (1986)
  • Bangert, D. : 'Zu den naturwissenschaftlichen Grundlagen des Chroma-Boden-Testes als bildschaffende Methode (1994)