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.

Eva-Safe Syringe Tubes, Pack of 12 An improved syringe collection tube is now available which meets OSHA requirements. It is made of a clear, heavy 30 mil. plastic tube with international biohazard markings printed in bright orange on the side. The end caps are also bright orange. The inside measurements of the tube are 7 3/4" long by 1" in diameter. One end cap is not removable. This end contains an inert sealing material which will enclose the "business" end of the needle. This sealing material is designed to prevent leakage of the contents of the syringe. The proper method of placing a syringe and needle inside a storage tube is to place the opened tube on a tabletop or counter top. WITHOUT picking up the tube, hold the syringe in ONE HAND and slide it, needle-end first into the tube. Keeping the other hand out of the way will prevent accidental punctures from the needle. The end cap of the storage tube has flat sides on the caps to prevent it from rolling or sliding while placing the syringe inside, and for ease of storage. • Meets OSHA requirements • 12 Count