Fig. 11From: Analytical studies on commercial artists’ colour charts from Das Deutsche Farbenbuch (1925)—identification of synthetic and natural organic colourants by Raman microscopy, surface-enhanced Raman spectroscopy and metal underlayer ATR-FTIR spectroscopySERS spectra of Wurzelkrapplack mittel in Mussini oil paint vs. Basic Red 5 (BR5)Back to article page