TEX Ultra Light Magnetic Applicator Designed by JR Davis, retired from the Houston Police Department, TEX can be used at hazardous crime scenes and then the outside cover discarded. A new cover is put on and you can continue working. This will help prevent contamination from surface to surface, from your brush to your kit and from your brush to your jar of powder. Each TEX disposable magnetic brush comes with four additional replacement covers, so it is like having five clean, new brushes to work with. The name of this magnetic brush, TEX, comes from the shape. (It resembles a tall, skinny person wearing a cowboy hat.) Designed by J.R. Davis for use at hazardous crime scenes, the TEX Ultra-Light is a lightweight and powerful magnetic applicator. •Includes five disposable covers to protect the wand during use and eliminate the chance of cross-contaminating evidence •Use a separate cover at each crime scene, or use one for each color of powder •When finished dusting, simply pull the cover away from the magnet to release the ball of powder

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.