QUESTIONED DOCUMENTS - Yola

Coloring matter (Aniline dyes) was added to the ink as well as a sterilizing agent to prevent growth of mold and bacteria in the ink. Fountain Pen Inks These inks are regarded as special fountain pen inks, and consisting of ordinary iron gallotannated inks with a lower iron content in most cases but with a higher dyestuff content than normal inks. ................
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