- Academy of Fine Arts, Vienna, Austria
- Art Historical Museum, Vienna, Austria
- Bavarian State Galleries (Doerner Institute), Munich, Germany
- Bavarian State Office of Historic Monuments (BLFD), Munich, Germany
- The British Museum, London, United Kingdom
- Canadian Conservation Institute
- Center for Research and Restoration in French Museums (C2RMF), Paris, France
- Center for Research on the Preservation of Collections (CRCC), Paris, France
- Freer Gallery of Art, Washington DC, USA
- FOM Institute AMOLF, Amsterdam, Netherlands
- Getty Conservation Institute, Los Angeles, California, USA
- Harvard Art Museum, Cambridge, Massachusetts, USA
- Heriot-Watt University, Edinburgh, United Kingdom
- Institute of Science and Molecular Technology – INSTM, CNR, Perugia, Italy
- ISRIM s.c.a r.l., Terni, Italy
- Jagiellonian University, Krakow, Poland
- Metropolitan Museum of Art, New York, New York, USA
- McCrone Associates, Westmount, Illinois, USA
- Museum of Fine Arts, Boston, Massachusetts, USA
- National Archives, Washington DC, USA
- National Gallery, London, United Kingdom
- National Gallery of Art, Washington DC, USA
- Heritage Conservation Centre, Singapore
- National Museum of Denmark, Copenhagen, Denmark
- National Museum of Western Art, Tokyo, Japan
- National Museums of Scotland, Edinburgh, United Kingdom
- Cultural Heritage Agency, Amsterdam, Netherlands
- “ORMYLIA” Art Diagnosis Centre, Ormylia, Greece
- Philadelphia Museum of Art, Philadelphia, Pennsylvania, USA
- Research Laboratory for Historic Monuments (LRMH), Champs sur Marne, France
- Royal Institute for Cultural Heritage (KIK/IRPA), Brussels, Belgium
- Swiss Institute for Art Research, Zürich, Switzerland
- Tate, London, United Kingdom
- Technion: Institute of Technology, Haifa, Israel
- University of Edinburgh, Edinburgh, United Kingdom
- University of Melbourne, Melbourne, Australia
- University of Pisa, Pisa, Italy
- University of Turin, Turin, Italy
- Winterthur Museum, Winterthur, Delaware, USA
Those listed have registered their intention to contribute to MaSC’s shared spectral databases.