Could you use a nylon mesh as a strainer (like cheesecloth) in filtering stuff? Maybe plant and herbal tinctures, etc? More diagnostically and along the lines of molecular bio, a lot of the membranes for DNA/RNA hybridization are nylon based--this is pharmaceutical related because maybe you are looking at gene expression levels after treatment with a certain drug, or looking for the presence of certain viral DNA.
Hmm...could you use nylons as an occlusive dressing?