Forensic Publications

Scientist preparing a slide on a microscope. The below documents are management system documents utilized by ATF Forensic Laboratories. They are provided for informational purposes only. Sensitive or copyrighted information has been redacted. The documents are used in ATF Laboratories and not published with the intent of setting a policy or analysis standard for other laboratories. The inclusion of equipment/software manufacturer names does not imply endorsement by ATF Laboratories.

The documents were current as of February 28, 2018. ATF management system documents are reviewed annually and revised as needed. For specific requests, submit a Freedom of Information Act (FOIA) request.

Name Description Type
ATF-LS Fire Debris (660.36 KB)

ATF Laboratory Services Fire Debris

Fire Debris
ATF-LS Firearms and Toolmarks (648.94 KB)
ATF Laboratory Services Firearms and Toolmarks
Firearm and Toolmark
ATF-LS Latent Prints (476.77 KB)

ATF Laboratory Services Latent Prints

Latent Prints
ATF-LS Quality Documents (3.96 MB)

ATF Laboratory Services Quality Documents

Quality Manuals
ATF-LS Questioned Documents (521.87 KB)

ATF Laboratory Services Questioned Documents

Questioned Documents
ATF-LS Triage Unit (265.65 KB)

ATF Laboratory Services Triage Unit

Triage Unit
ATF-LS-E02 - Explosives Sections Abbreviations (226.67 KB)
Abbreviations for explosives sections.
Explosives
ATF-LS-E03 - Scanning Electron Microscopy with Energy Dispersive Spectrometry (241.75 KB)
Scanning electron microscopy/energy dispersive spectrometry (SEM/EDS) is a non-destructive analytical technique used to identify elements present in solid, powdered or liquid samples.
Explosives
ATF-LS-E05 - X-ray Powder Diffraction (316.99 KB)
X-ray diffraction is used for the identification of any crystalline material, including inorganic and organic crystalline explosives, residues, and raw materials. Samples may be either individual substances or mixtures.
Explosives
ATF-LS-E06 - Fourier Transform Infrared Spectroscopy (308.08 KB)
Fourier Transform infrared spectroscopy (FTIR) is a valuable method of identification and comparison in forensic exams.
Explosives
ATF-LS-E07 - Pyrodex System (280.64 KB)
Liquid chromatography is a separation technique based on selective interactions between a stationary phase and a mobile phase.
Explosives
ATF-LS-E09 - Detection of Explosives by Gas Chromatography/Mass Spectrometry (GC/MS) (342.92 KB)
Gas Chromatography/Mass Spectrometry is used for the characterization and identification of many materials, including complex mixtures, which are capable of passing through a gas chromatograph.
Explosives
ATF-LS-E11 - Pyrolysis-Gas Chromatography/Mass Spectrometry (331.1 KB)
Pyrolysis is a technique used to break chemical bonds of molecules by the use of thermal energy only.
Explosives
ATF-LS-E13 - Detection of Ions by Ion Chromatography/Mass Spectrometry (IC/MS) (307.43 KB)
Detection of Ions by Ion Chromatography/Mass Spectrometry is used for the identification of inorganic monatomic and polyatomic ions and organic acids commonly found in explosives and their combustion products.
Explosives
ATF-LS-E14 - Ion Chromatography -Cation Analysis (261.81 KB)
This procedure is applicable for determination of inorganic and organic cations commonly found in aqueous extracts of explosives and explosive residues.
Explosives
ATF-LS-E15 - Ignition Susceptibility Test (245.34 KB)
Ignition is the act of kindling or setting on fire any combustible substance. An ignition susceptibility test (IST) is conducted to determine if suspected intact explosives or fuse will support combustion.
Explosives
ATF-LS-E16 - Analysis and Comparison of Composition C-4 (268.19 KB)
This policy and procedure guideline establishes a standard method for the analysis and comparison of Composition C-4.
Explosives
ATF-LS-E17 - Spot Tests (431.15 KB)
Used for initial testing/screening of suspected intact and explosives residue.
Explosives
ATF-LS-E19 - Basic Calibration & Maintenance of the Stereo Microscope.final_.pdf (245.67 KB)
This method describes the procedure for basic calibration and maintenance of the stereo microscope.
Explosives
ATF-LS-E20 - Basic Microscopy Setup on Compound Microscopes (243.12 KB)
This method describes the procedure for basic microscopy setup on compound microscopes.
Explosives
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