Jacques Connan and Pierre Albrecht of the University Louis Pasteur-Strasbourg carried out mass spectrometry to identify the mystery resin. Their work is reported in the Journal of Archaeological Sciences

You might be interested in reading my review in Science of the PBS program. It can be found on my Web site.
all best, Michael Balter

Known as the first books to be produced using movable type, the Gutenberg Bibles are also famous for their colorful illustrations. But the exact composition of these 15th century painted images, which depict animals, flowers, fruit and other decorative figures, has remained a mystery, until now.
Using non-invasive analytical techniques, a team of researchers in [...]

Multi-Spectral Imaging
Multi-Spectral Imaging (MSI) is based on technology originally developed by NASA to photograph features of other worlds in bands beyond the visible spectrum, both infrared and ultraviolet. The technology was adapted by researchers at Brigham Young University to filter a narrow bandwidth of infrared light, which reacts with ink but not the surrounding material, [...]