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Table 2 Average pH of plain area of the rag sample without verdigris after deacidification treatment

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