A transparent brown natural earth containing usually over 90% of organic matter used in paintings since 17th century and extensively in the 19th century.
Manufacturer / product code: Kremer / 41000
Chemical description: humic acids, manganese oxide and iron oxide KREMER PDF
Color: brown
Color Index: NBr8
More info: Pigments Through The Ages
Pure pigments (no binder, just powder)
DOWNLOAD paper: “Pigments Checker version 3.0, a handy set for conservation scientists: A free online Raman spectra database”
XRF spectroscopy
XRF Spectroscopy Pigments-Checker Database
DOWNLOAD previous database from Pigments Checker V.3 DOWNLOAD paper: R. Larsen, N. Coluzzi, A. Cosentino “Free XRF Spectroscopy database of Pigments Checker” Intl Journal of Conservation Science.
Reflectance Spectroscopy (200-1000 nm) – GorgiasUV Spectrometer
Reflectance Spectroscopy (200-1000 nm) (GorgiasUV) Pigments-Checker Database
Reflectance spectroscopy – Gorgias Spectrometer for Art
Reflectance Spectroscopy (350-950 nm) (Gorgias) Pigments-Checker Database
NIR Reflectance spectroscopy
NIR-Reflectance Spectroscopy (930-1690 nm) Pigments-Checker Database
FT-IR Spectroscopy (Non-invasive Diffuse Reflectance Probe)
FTIR non-invasive Spectroscopy Pigments (pure, no binder) Database
