Handbook of Forensic Services (pdf) - FBI

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ß Handbook of Forens c Serv ces 2007 U.S. Department of Transportat on regulat ons and the follow ng gu del nes must be followed when sh pp ng l ve ammun t on: ü ü ü Package and sh p ammun t on separately from firearm(s). The outs de of the conta ner must be labeled “ORM-D, CARTRIDGES, SMALL ARMS.” The Declarat on of Dangerous Goods must nclude the number of package(s) and the gross we ght n grams of the completed package(s). ß Do not mark bullets, cartr dges, cartr dge cases, shotshells, or shotshell cas ngs. The date, t me, locat on, collector’s name, case number, and ev dence number must be on the conta ner. Back to the top Chemical Examinations of General Unknowns General unknowns nclude powders, l qu ds, and sta ns that are of ndeterm nate or g n or cannot be readily classified. Full identification of an unknown may not always be poss ble; however, general classification of a substance is usually achievable. 24
Handbook of Forens c Serv ces 2007 When compar son samples are ava lable, t may be poss ble to comment regard ng the cons stency of the unknown substance compared w th a known sample. Call the Laboratory at 703-632-8441 prior to submitting general unknowns to ensure that the evidence will be accepted for examination. The commun cat on accompany ng the ev dence must reference the telephone conversat on accept ng the ev dence. Questions concerning examinations of general unknowns should be directed to 703-632-8441. Follow the ev dence subm ss on d rect ons, nclud ng Requesting Evidence Examinations and Packaging and Shipping Evidence. ß Subm t powder and l qu d samples n leakproof conta ners. Do not subm t large sta ned ev dence. When poss ble, cut a small sample of the sta ned area and subm t n a heat-sealed or resealable plast c bag. Collect an unsta ned control sample, package separately, and subm t t w th the sta ned ev dence. When cutt ng s not poss ble, transfer quest oned sta ns by rubb ng w th a clean (dry or wet w th alcohol) cotton swab. Use an unsta ned 25
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