In this tutorial, we learn how to use ninhydrin to reveal latent prints on paper. This will work out because you will be spraying a special liquid onto the porous area. After this, you will turn on a black light and then be able to see the fingerprints appear in purple! Be careful with the solution, because it's flammable! This will also stain your skin, so make sure you wear gloves and don't let it contact a surface you don't want stained. To mix the solution, you will combine both of the solutions together in a bottle with a cap on it. Slightly shake these, then add a sprayer on the top of the bottle. After this, spray on the area with fingerprints and watch them appear before your eyes!
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