Experimental Characterization of Oil-Colophony Varnishes: Protection of Musical Instruments Claudio Canevari1, Arianna Legnani2, Maurizio Licchelli2,3, Marco Malagodi2,4, Maduka L. Weththimuni3, Alberto Zeffiro3 (1) Civica Scuola di Liuteria, Via Noto 4, 20141 Milano, Italy (2) University of Pavia, Arvedi Laboratory of Non-Invasive Diagnostics, via Bell'Aspa 3, 26100 Cremona, Italy (3) University of Pavia, Department of Chemistry, via Taramelli 12, 27100 Pavia, Italy (4) Department of Musicology and Cultural Heritage, Corso Garibaldi 178, 26100 Cremona, Italy