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Table 1 Proportions of animal glue and alum for silk samples with different pH values

From: Key to the conservation of calligraphy and painting relics in collection: proposing a lighting damage evaluation method

Samples

Proportions(g)

pH values

Animal glue

Alum

Deionized water

Silk

0.5

2.3

100.0

3.5

0.5

0.2

100.0

4.0

0.5

0.1

100.0

5.0

0.0

0.0

0

6.0