Nihon นไฮด pour a chemical that reacts with the amino acids are compounds that Purple called "Ruhemann's purple" NI นไฮด pour a chemical that is used to detect fingerprints on paper.
New Hydraulic poured a chemical reaction with the amino acid to yield a compound purple called the "Ruhemann's purple" New Heights Stradlin is a chemical used to detect latent prints on paper.