Skip to main content
Heritage Science

Table 2 Mean and half maximum spread of the colour changes (ΔE*) measured on 5 book covers (BC) samples from October 2019 to October 2020 following a 4-month schedule

From: Conservation risks for paper collections induced by the microclimate in the repository of the Alessandrina Library in Rome (Italy)

Sample

ΔE*

Mean

Half maximum spread

BC1

128

2

BC2

32

4

BC3

34

7

BC4

94

1

BC5

78

4

Back to article page