Fig. 2From: A study of the deterioration of aged parchment marked with laboratory iron gall inks using FTIR-ATR spectroscopy and micro hot tableSchematic of typical parchment specimen designed for this study of inked and ink-free areas. Areas are designated as: I1, PI, P2, P4, P6: ATR-FTIR Analysis. I2, I3, P3, P5: Area sampled to make KBr pellets followed by ATR-FTIR analysisBack to article page