If you are considering purchasing a portable explosives detector you should ensure that you select only those devices which:
1. Have the ability for particulate detection. (Vapour detection alone is ineffective).
1. Have the ability for particulate detection. (Vapour detection alone is ineffective).
2. Are able to detect acetone-based home made explosives such as TATP.
With this in mind your choice should quickly narrow down to two models: The EVD 3500 (target price $31,000) and the Sabre 4000 (target price $26,000).
Older models such as the EVD 3000 are not able to detect TATP, the weapon of choice of self-starter Al-Qaeda cells.
If you are using anything less than these and you are reconnoitred by Al-Qaeda, they will know immediately that they are smarter than you and that you therefore represent a viable target!