Fluorescent powders, like dye stains, allow you to visualize latent fingerprints otherwise not detected with conventional processes. Green Fluorescent Powder can be used with a variety of forensic light sources, including the ORION-LITE. Powder should be applied with a Green Feather Brush. Black backing cards or gellifters may be used to provide a sharp contrast with the resulting ridge detail. NOTE: To prevent clumping, our powders include a desiccant canister inside each jar with a capacity for absorbing moisture.