Patent ID: 9417226
Filing Date: 2016-08-16
CPC Classification: A61F,A61N,G01N,Y10T

Claim Text:
1. A method for the detection of explosive substances using a single sample, the method comprising the steps of: providing a sample on a collection medium; contacting the sample with a nitro aromatic compound in a basic environment with a pH lower then the pH at which the Meisenheimer complex of the nitro aromatic compound is formed so as to detect the presence of a suspect nitro aliphatic explosive compound; if a color change occurs, comparing the color produced to a color chart to ascertain whether a nitro aliphatic explosive is present; if no color change has occurred, contacting the same sample with a basic compound so as to detect the presence of a suspect nitro aromatic explosive compound where said basic compound has a pH higher than 12; and if a color change occurs, comparing the color produced to a color chart to ascertain whether a nitro aromatic explosive is present.