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January 2000 Volume 2 Number
1
Trace Evidence Quality
Assurance Guidelines
(January 1999 Revision)
Fiber
Addenda
FA2.3.2.3 and FA2.3.3.3
Successful completion of
the following undergraduate or graduate courses:
1. One year (or equivalent)
general chemistry
with laboratory work;
2. One year (or equivalent) organic chemistry
with laboratory work; and
3. General biology with laboratory work.
If the following courses
are not available at the graduate or undergraduate level, then
structured course work is required:
4. Analytical/Instrumental
Analysis;
5. Basic Microscopy and Polarized Light Microscopy; and
6. Fiber Microscopy.
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Fiber Addendum
FA2.4.1.2.a
The training period will
be a minimum of 12 months, full time, for the inexperienced trainee
examiner with no prior forensic experience. (The allotted time
is to include all those specifications under Sections 2.4.1.2,
2.4.1.3 and 2.4.1.4. These sections refer to casework observation,
supervised casework, proficiency test[s], examinations, and moot
courts.)
Suggested topics for the
time line follow:
Introduction to Fibers
A. Fiber History, Usage,
and Manufacturing
B. Fiber Classification
C. Fiber and Textile Technology and Terminology
D. Chemistry and Manufacturing Processes (Polymers
and Dyes)
E. Identification Versus Comparison
F. Overview of Forensic Fiber Examinations
G. Transfer and Persistence of Fibers
H. Associated Examinations
Collection and Preservation
A. Fiber Search and Recovery
B. Sample Handling
C. Contamination
D. Packaging
E. Documentation
Sample Preparation Methods
Identification of Vegetable
Fibers
A. Botanical Classification
B. Morphology and Anatomy
C. Methods of Identification
Identification of Animal
Fibers
A. Zoological Classification
B. Morphology and Anatomy
C. Methods of Identification
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Identification of Inorganic
Fibers
A. Classification
B. Methods of Identification
Identification of Manufactured
Fibers
A. Generic Classification
B. Microscopic Characterization
1. Stereomicroscopy
2. Polarized Light Microscopy (PLM)
3. Infrared Microspectroscopy
C. Solubility
D. Instrumental Methods
Fiber Comparisons
A. Microscopic Examinations
1. Comparison Microscopy
2. Fluorescence Microscopy
B. Color Analysis
1. Dye Classification
2. Thin-Layer Chromatography
3. Microspectrophotometry
C. Instrumental Methods
Instrumental Methods
A. Fourier Transform Infrared
Spectroscopy (FT-IR) or FT-IR
with Microscope
B. Microspectrophotometry (UV-VIS/VIS)
C. Thermal Microscopy
D. Pyrolysis Gas Chromatography
E. Scanning Electron Microscopy/Energy Dispersive Spectroscopy
(SEM/EDS)
F. Other Techniques
Fabrics
A. Construction and Composition
B. Physical Match
C. Examination of Damage
D. Impressions
Ropes and Cordage
A. Construction and Composition
B. Physical Match
C. Knots
Interpretation and Presentation
A. Factors Affecting Evidence
Interpretation
B. Significance of Fiber Evidence
C. Report Writing
D. Testimony
Training Evaluation
A. Written and Oral Examinations
B. Competency Testing
C. Supervised Casework
D. Moot Court
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FORENSIC SCIENCE COMMUNICATIONS JANUARY 2000 VOLUME 2 NUMBER 1 |
