Does ultraviolet light pass through cling film?
- Keith PLv 71 decade agoFavourite answer
Yes. Polyethylene (plastic wrap) has a couple of absorption lines in the blue part of the spectrum, but is transparent to UV.
- Uncle AlLv 51 decade ago
Plastic wrap is mostly transparent through the deep UV. Polyethylene (e.g., Glad Wrap) cuts off around 200 nm and the film is very thin. Plasticized PVC (Reynolds plastic wrap) will cut off around 240 nm, but it is so thin it hardly makes a difference.