Explosive detection
Explosive detection is the process by which you use a non destructive inspection process to determine if a container contains any kind of explosive material.
Detection tools
Dogs
Specially trained dogs can be used to detect explosives. These dogs are trained to identify the scent of many explosive material and notify their handler when they detect one of these scents.
Mechanical scent detection
Several types of machines have been developed to detect trace signatures for various explosive materials.
X-ray machines
Specially designed X-ray machines can detect explosives by looking at the density of the items being examined.
Detection aids
A detection taggant can be added when explosives are made to make detection easier. An example of this is with Semtex which now is made with ethylene glycol dinitrate added as a detection taggant.