17K views · 467 reactions | The test for gunpowder residue on hands is the: A. Kastle-Meyer test B. Paraffin test C. Luminol test D. Ninhydrin test . #GunpowderResidue #ParaffinTest #ForensicScience #luminoltest | Rosalie Bonye Capin | Facebook

Who knew those ironing skills would come in handy in the Cyber & Forensics Bureau! 😆 One method to getting fingerprints from porous items like paper is using the chemical ninhydrin, which reacts with the amino acids present in fingerprint residue. To use this method, detectives spray ninhydrin on the item, where it turns a bright purple! They then put it under a hood to let it dry. Then, the iron comes into play. Very carefully (and slowly), they allow the steam from the iron to heat the paper,