Table 3.
Ultraviolet protection factor of the films (UPF).
| UPF | Normalised UPF | Protection Grade | |
|---|---|---|---|
| PVA film | 2.03 | 6.15 | poor |
| 1 wt. % film | 2.76 | 8.28 | poor |
| 5 wt. % film | 15.07 | 43.39 | good |
| 10 wt. % film | 35.79 | 98.60 | very good |
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