Presumptive Gunshot Residue Test Kit
by Innovating Science
The presumptive gunshot residue test is actually two tests. The first test is the diphenylamine test, which detects the presence of nitrates, which are a common compound used in ammunition. If nitrates are present on the sample being tested, the diphenylamine will produce a blue color. The other is the sodium rhodizonate test, and is used to detect the presence of lead and barium, which are typically used as ingredients for a bullet's primer. A deep red is a positive result, which indicates the presence of one of the metals.
Because this is a presumptive test, we cannot definitively state whether or not the source of these chemicals and metals is the result of a gun being fired. However, it does indicate that further testing should be done.
Every time a gun is fired, a combustion reaction occurs. It involved a number of different chemicals, and chemical reactions. These mechanisms and principles are fairly standard, and apply to the vast majority of firearms. The only thing that is not standard is the makeup of the different chemical blends that the various manufacturers use.
Whenever a bullet is fired, not everything is combusted. The force of the explosion can cause some of the material to be ejected from the gun anywhere that the heat and gas, caused by the firing of the bullet, can escape from the gun. Once expelled from the gun, the material can settle on the shooter's hands, clothing, hair, or on parts of the crime scene itself.
This kit includes:
- 5mL of Diphenylamine Solution
- 5mL of Lead nitrate
- 0.025g of Sodium rhodizonate
- 20 alcohol swabs
- 1 Teacher's guide
Each bottle of our reagents come standard with an MSDS sheet included. If you require a copy of this prior to purchase, please contact us.
|Product Warnings||Caution - To be used under Adult Supervision. Proper Laboratory Safety Procedures Should Always be Followed!, Chemical - For lab use only. Not recommended for food, drug or cosmetic use., Chemical - Please refer to the included MSDS sheet for more information about safety., Chemical - This is a chemical. Keep out of reach of small children.|
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|Available for Gift Wrap||No|
- Caution - To be used under Adult Supervision. Proper Laboratory Safety Procedures Should Always be Followed!
- Chemical - For lab use only. Not recommended for food, drug or cosmetic use.
- Chemical - Please refer to the included MSDS sheet for more information about safety.
- Chemical - This is a chemical. Keep out of reach of small children.