120ml jar. Prepared Iron Oxide Synthetic Inorganic Colour Index: PR101 ASTM Lightfastness I Hiding: Opaque Series 1 Pigments need to be bound to become a paint. For this they are mixed with a binder. Langridge supplies traditional earths from original sources as well as constantly researching and selecting modern pigments to satisfy artist demand for new colours of vibrancy and intensity. Every colour is verified for its origin and identified for its chemical characteristics to provide the artist with a range of pigments noted for their quality of grade and fineness, ensuring the maximum benefit in tone and chroma.