Prepared in antiquity from the ink of the shellfish Murex trunculis and Murex brandaris.
Manufacturer/ product code: Kremer / 36010
Chemical Description: natural 6,6´-dibromindigo with impurities
Color: violet
Color Index: NV 1
More info: Kremer
Raman Spectroscopy 532 nm – ElviRa Spectrometer for Art
Raman 532 nm cannot identify this pigment.
Raman spectroscopy 785 nm
Raman 785 nm cannot identify this pigment.
Raman spectroscopy 1064 nm
Pigments (powder, no binder)
XRF spectroscopy
XRF cannot identify this pigment.
Reflectance Spectroscopy (200-1000 nm) – GorgiasUV Spectrometer
Reflectance Spectroscopy (350-950 nm) – Gorgias Spectrometer
NIR Reflectance Spectroscopy (930 – 1690 nm)
FT-IR Spectroscopy (Non-invasive Diffuse Reflectance Probe)
