Expray™ is a unique, aerosol-based field test kit for the detection and identification of Group A explosives (e.g. TNT, TNB, etc.), Group B explosives (e.g. Semtex H, RDX, C4, etc.) and compounds containing inorganic nitrates that are used in improvised explosives (e.g. ANFO). Expray™™ is used as a pre-blast, analytical tool, and post-blast investigative tool, to screen against potential terrorist elements, and as a technical evaluation test in soil remediation on hazardous material "clean-up" sites. When used as a post-blast investigative tool, the product is proven to speed up crucial investigations.

The level of sensitivity (20 nanograms or less) surpasses that of other currently available products. The testing process is fast and efficient. No glass ampoules, spatulas or waiting period required. Results appear in seconds. No additional tools or equipment required. The identification/detection process requires no special training and testing can be performed "on the spot".

For both law enforcement and investigative personnel, Expray™ is a proven tool for increasing the accuracy, efficiency and number of interdictions. For forensic and environmental laboratories, it has been proven to reduce the number of samples submitted for testing, saving both time and money.

Expray™ is sold in a kit configuration, which provides all three aerosol sprays, collection papers, and an RDX-impregnated verification pad (verification pad is useful for ensuring that the spray still contains active reagents, and for demonstrating how a positive reaction will appear) in a convenient plastic carry case. Expray™ kits are available in both regular size (100 tests) and mini-size (50 tests).

Expray™ provides a low "per test" cost and poses no risk to you or the environment.

"E": Expray™-1 for Group A

Expray™-1 is used to search for GROUP A type explosives which include TNT, Tetryl, TNB, DNT, picric acid and its salts. To use, wipe suspected surface with special collector test paper. Spray with Expray™-1. If a dark brown-violet color appears, this indicates the presence of TNT; An orange color indicates the presence of Tetryl and other GROUP A explosives.

"X": Expray™-2 for Group B

Expray™-2 is used to search for GROUP B type explosives which include Dynamite, Nitroglycerine, RDX, PETN, SEMTEX, Nitrocellulose and smokeless powder. If after spraying Expray™-1 there is no color change, spray Expray™-2. The almost immediate appearance of a pink color change indicates the presence of GROUP B explosives. Most plastic types of explosives belong to this group, including C-4 and Semtex.

"I": Expray™-3 for Nitrates

Expray™-3 is used to search for nitrate-based explosives which includes ANFO (ammonium nitrate-fuel oil), commercial and improvised explosives based on inorganic nitrates, black powder, flash powder, gun powder, potassium chlorate and nitrate, sulfur (powder), and ammonium nitrate (both fertilizer and aluminum). If there is still no reaction after using the Expray™ cans 1 and 2, but presence of explosives is still suspected, spray the same paper with Expray™-3. A pink reaction indicates the presence of nitrates, which could be part of an improvised explosive.

Drop-Ex Plus

Drop-Ex Plus is our latest Explosive Detection and Identification Kit. Drop-Ex is actually an extension of the popular DROP-EX Kit and detects the widest possible range of explosive types, due to its ability to detect the additional explosive categories for improvised explosives: Chlorate and Peroxide-based explosives.

Peroxide-based explosives are powerful explosive substances that can be prepared from several over the counter materials. This well-known explosive type is currently in use by terrorist groups. This explosive material is usually known by its abbreviation TATP (Tri Acetone Tri Peroxide).
This system is based on the same reagents in Expray™, but in a dropper bottles, for ease of use during field and laboratory investigation. The first sample can be tested using Drop-Ex 1, 2 and 3. The test for chlorates, bromides and the peroxide based explosives must be a separate test using Drop-Ex A and Drop-Ex B.

The detection range of the kits:

Drop-Ex # 1 for Group A

(Nitroaromatics) - this type of explosives includes TNT, Tetryl, TNB, DNT, picric acid and its salts.

Drop-Ex # 2 for Group B

(Nitrate esters and nitramines) - this type of explosives includes Dynamite, Nitroglycerine, RDX, C4, PETN, Semtex H, Nitrocellulose and smokeless powder. NOTE: Most plastic types of explosives belong to this group.

Drop-Ex # 3 for Inorganic nitrates - the nitrates based explosives include ANFO (ammonium nitrate-fuel oil), commercial and improvised explosives based on inorganic nitrates, black powder, flash powder, gun powder, potassium nitrate, and ammonium nitrate.

Drop-Ex A for Chlorates and Bromates – this type of explosives includes potassium chlorate and sodium chlorate. Drop-Ex # A is used for detection of chlorates and bromates and can be used by itself.

Drop-Ex B for Peroxide-based explosive compounds – includes TATP (Tri Acetone Tri Peroxide) and HMTD Drop-Ex # B requires that Drop-Ex # A be used first. If you are not sure what type of explosive you are testing for, you will need two samples.

Detection Chart

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