certain type of film? exposure time?
The most important thing to know is that most film sees UV better than human eyes do. Put a UV filter on the lens to keep that blue from washing out the image.
Outside of that, it's normal low-light photography. Fluorescent objects generally aren't putting out a great deal of light, so you may need a tripod and long exposures and/or fast tilm. Exposure time depends on how brightly that particular item glows (which in part depends on how strong your UV source is) and how fast your film is.
Not sure about digitals. I know they see into the IR range, but I'm not sure how sensitive they are to UV.
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