Fig. 7From: A non-invasive screening study of varnishes applied to three paintings by Edvard Munch using portable diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS)Portrait of Hans Jæger (Woll 174), UVA-induced fluorescence photography, showing fluorescence of the upper varnish coating, pigment differences and pFTIR spot locationsBack to article page