The analytical services that we offer include, but are not limited to, Photomacrography and Photomicrography, reflected and transmitted Infrared photography, Ultra Violet induced visible photography and Raking and Transmitted light Photography. Also, in cooperation with other laboratories, we offer other analytical services as Optical Microscopy and Scanning Electron Microscopy with EDX microanalysis for pigments identification; UATR-FTIR Spectrometry, HPLC and GC-MS chromatography for organic lakes and binding media identification as well as Data Interpretation.
In this panel painting, the use of UV light revealed an extensive overpaint shown, in the right margin, as a dark area. The yellow milky appearance on the rest of the surface indicates an old varnish.
On occasion, a reflected infrared photograph of a painting, can reveal a preparatory drawing. The image to the left is taken with a regular camera and lightning, in the photograph to the right, the camera, prepared for infrared reflectography, cuts through the colors, especially the red that appears as transparent, to reveal the underlying preparatory drawing
The canvas in this painting have darkened with oxidation and ageing. The inscription was barely legible as it can be seen in the first picture. In the one to the right, with the use of infrared reflectography, the photograph revealed the inscription with absolute clarity.