It identifies the presence of iron (II) ions (ferrous ions). These ions are responsible for iron gall ink corrosion , a destructive process that causes ink to eat through paper (oxidative degradation of cellulose).
Explain how to once it is detected Suggest storage methods to prevent further degradation Let me know what you'd like to explore further. Iron Gall Ink Test Paper - Conservation Supplies Australia Gall-10rar
The (sometimes referred to as iron gall test paper) is a specially designed, non-bleeding test paper used in conservation to detect iron (II) ions in hydrophilic substrates. Key details about this paper include: It identifies the presence of iron (II) ions (ferrous ions)
The test paper is moistened and applied to the ink. If iron (II) ions are present, the test paper changes color (turns a red/purple complex) due to the indicator bathophenanthroline reacting with the iron. Iron Gall Ink Test Paper - Conservation Supplies