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Table 3 Estimated residual stabilities (R) with their standard deviations and 95% reasonability ranges of R at the maximum time of light, thermal and thermal aging with NO 2

From: Study of stability of brown-gray inks on paper support

Sample

Residual stabilities (R) and 95 % reasonability ranges of R

Light ageing

Thermal ageing

Thermal ageing with NO 2

 

R (23°C)

R 95 %

R (23°C)

R 95 %

R (23°C)

R 95 %

W

0.85 ± 0.49

0-1

1.8 ± 1.2

0-1

5.2 ± 3.4

0-1

B

1.7 ± 0.9

0-1

0.79 ± 0.19

0.42-1

0.79 ± 0.23

0.34-1

S

2.4 ± 2.1

0-1

4.8 ± 1.6

>1

300 ± 124

>1

IGI 11

0.49 ± 0.16

0.18-0.80

0.18 ± 0.07

0.01-0.71

0.36 ± 0.18

0.01-0.71