How do you use luminol?

CSI agents use Luminol to detect the presence of blood. You can do this if you have a beef or chicken tray from a supermarket. One drop of blood on a piece of paper towel or meat wrapper is all you need. Add the paper to a small plastic cup with the luminol mixture and copper sulfate in water (the luminol solution.)Click to see full answer. Similarly, what is luminol and how does it work?Luminol (C8H7N3O2) is a chemical that exhibits chemiluminescence, with a blue glow, when mixed with an appropriate oxidizing agent. Forensic investigators use luminol to detect trace amounts of blood at crime scenes, as it reacts with the iron in hemoglobin.Secondly, can too much luminol destroy DNA? The use of luminol solution can also damage other surrounding evidence, such as proteins, enzymes and genetic markers, though it’s been shown that DNA samples can still be obtained from evidence on which luminol has been sprayed. As it’s water-based, it can also cause the dilution and smearing of blood impressions. Besides, do police use luminol? For this reason, investigators only use luminol after exploring a lot of other options. It is definitely a valuable tool for police work, but it’s not quite as prevalent in crime investigation as presented on some TV shows. The police don’t walk into a crime scene and start spraying luminol on every visible surface.Can luminol detect blood cleaned with bleach?Chlorine bleaches can remove a Bloodstain to the naked eye but fortunately, forensics experts can use the application of substances such as luminol or phenolphthalein to show that haemoglobin is present. With oxygen bleach, the bleach has an oxidising agent, which could be a substance such as hydrogen peroxide.