I'm looking for a way to protect the surface of large c-prints on crystal archive paper. They have been pressure mounted on gatorfoam but have no glazing. I would like to be able to clean the surface and protect it from spills(someone spilled what looks like chocolate milk on one in a group show, nice huh?). I've seen spray products like Macdonald photo lacquer but i am wondering if those products are more for lets say "less serious" photographers. Any suggestions?
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