Fig. 12From: The identification, approaches to cleaning and removal of a lead-rich salt crust from the surface of an 18th century oil paintingCross-section of sample BMRS4 #12 (blue sky) after removal of the crust showing the blue paint layer and the double-coloured ground layers; A Darkfield illumination; B UV radiation; C The SEM-BSE image shows that the paint layer has not been abradedBack to article page