Table 4 Average pH values for accelerated degradation specimens for sample 1 L (n = 3)
Specimen | Average pH | Std. Dev. |
|---|---|---|
1 (1w) | 7.39 | 0 |
2 (1w) | 7.39 | 0 |
3 (1w) | 7.39 | 0 |
1 (2w) | 7.46 | 0.01 |
2 (2w) | 7.48 | 0.01 |
3 (2w) | 7.49 | 0.02 |
1 (3w) | 7.48 | 0.04 |
2 (3w) | 7.47 | 0.04 |
3 (3w) | 7.47 | 0.04 |
1 (4w) | 7.50 | 0.08 |
2 (4w) | 7.51 | 0.08 |
3 (4w) | 7.51 | 0.08 |