Rhodamine 6G, 25 Gram Rhodamine 6G is one of the best laser or forensic light source dyes available on the market. •It is inexpensive, safe to use and a little goes a long way •It can be diluted in methanol or other similar solvent, or in water •Can be used on metal, glass, leather, plastic and other surfaces •Unmixed Rhodamine 6G has an indefinite shelf life as long as it is kept dry and stored in a dark bottle •Mixed solution has a shelf-life of roughly one year and should be stored in a fume hood or flammable liquids cabinet NOTE: More Info in Long Description

Crystal Violet, 25 Grams Use Crystal Violet to develop latent fingerprints on the adhesive side of almost any kind of tape, e.g., Scotch, electrical, Kraft, etc. Mix the powder in water, soak the tape in the solution and rinse with running tap water. The caution about working with Crystal Violet powder or solution is that it is a very messy dye and will stain skin, clothes, floors and counter tops. It may be very difficult, if not impossible, to remove the stains from some clothing, furniture and floor covering. Crystal Violet is also often used as a "theft detection powder." The item is first VERY lightly dusted with the powder and when the item comes into contact with moisture (for example, the thief's hands), it turns dark purple and stains anything that comes into contact with it. However, this use is NOT suggested due to the messy nature of the product and the fact that the stains DO NOT come out of most surfaces. NOTE: More Info in the Long Description Shelf-life of Crystal Violet powder: indefinite. The working solution should not be kept much longer than 3-6 months. While older solutions may continue to work, the results might not be as good.