Fig. 6From: Azurite in medieval illuminated manuscripts: a reflection-FTIR study concerning the characterization of binding mediarFTIR spectra of azurite with glair binder (red lines), varnished with a glair (black line) and b Arabic gum (blue line) with the respective binder references (grey lines). The characteristic features of the varnish materials are indicated with an asteriskBack to article page