New Strategy for the Cleaning of Paper Artworks: A Smart Combination of Gels and Biosensors

Table 2

Color of the paper samples obtained after treatment with the Graff “C”.

Sample	Color after Graff “C”	Composition
Pure cellulose	Brown-red	Cotton
Filter paper	Blue	Softwood pulp
Newspaper	Brown-purple	Softwood pulp
Book (1966)	Red	?
Parchment	Brown-red	Cotton