Raman spectroscopy gives very specific material identification. The ISAAC Research Centre has developed a number of mobile Raman spectrometers for both local and remote operation at large stand-off distances up to 14m.
Non-invasive, highly specific identification of inorganic materials (e.g. pigments, salts) & organic dyes on works of art and architectural monuments
Remote Raman spectrometer during the analysis of the murals in St. Barnabas Cathedral, Nottingham.