What is the recommended packaging for a shell casing used as evidence?

• A. Sealed in a paper envelope with initials
• B. Placed in a plastic bag, seams sealed and initialed
• C. Wrapped in aluminum foil
• D. Placed in a metal tin

Answer: (B)

Proper packaging and chain-of-custody control are essential for shell casings to preserve trace evidence and prevent contamination. Placing the shell casing in a plastic bag protects any residue or surface characteristics from moisture and environmental contaminants while allowing the item to be sealed securely. Sealing the bag’s seams creates a tamper-evident container, and having initials on the seal provides a clear record of who handled or authenticated the packaging, helping to maintain accountability as the item moves through the investigation and court process. Other options fall short because paper envelopes can allow moisture and debris to affect the evidence, aluminum foil can trap or alter residues and isn’t reliably tamper-evident, and a metal tin may be heavier or harder to seal and log consistently.