From: Investigation of the stabilization of verdigris-containing rag paper by wet chemical treatments
Before treatment | After Ca(HCO3)2 | After Mg(HCO3)2 | |
---|---|---|---|
6.8 ± 0.03 | Spraying on a suction table | 7.40 ± 0.15 | 7.43 ± 0.09 |
Brushing on the verso | 6.95 ± 0.15 | 7.07 ± 0.05 | |
Floating | 7.41 ± 0.01 |  |