From: Non-destructive collection survey of the historical Classense Library. Part I: Paper characterisation
pH
DP
TS (N)
TSF (N)
Lignin (mg/g)
Protein (%)
Rosin (mg/g)
≤ 40
> 40
Rag
0.71
400
9.3
8.5
18.9
0.66
1
Bleached
0.63
7.8
8.3
6.5
7.2
Groundwood