Sirchie LV517L G Acid Yellow 7 Dye Stain, 8 Ounce

Acid Yellow 7 is a dye solution mixture that is used for staining fingerprints and shoeprints made in blood. These blood prints are stained yellow after treatment with Acid Yellow 7 and then fluoresce under blue/blue-green light. Acid Yellow 7 is not suitable for use on absorbent surfaces like paper, carton material, sheets or carpet. It works very well on non-absorbent backgrounds such as linoleum, glass, tile or painted surfaces.