Which container is preferred for arson evidence to minimize contamination?

Which container is preferred for arson evidence to minimize contamination?

• A. Plastic Evidence Bag
• B. Aluminum Tin Can With A Lid
• C. Glass Jar
• D. Cardboard Box

Answer: (B)

In arson evidence, preserving volatile residues and preventing contamination is the priority. An airtight, nonporous container is best, and an aluminum tin can with a lid provides a tight seal that stops evaporation of accelerants and shields the sample from environmental smells and cross-contamination. Metal is durable and nonreactive with common residues, making it reliable for transport and storage. Plastic bags are porous and can allow vapors to escape or transfer residues; cardboard boxes can absorb liquids and odors, risking contamination; glass jars are inert but fragile and may not seal as securely in field conditions. So the aluminum tin can with a lid optimally protects the evidence and maintains its integrity for analysis.

In arson evidence, preserving volatile residues and preventing contamination is the priority. An airtight, nonporous container is best, and an aluminum tin can with a lid provides a tight seal that stops evaporation of accelerants and shields the sample from environmental smells and cross-contamination. Metal is durable and nonreactive with common residues, making it reliable for transport and storage. Plastic bags are porous and can allow vapors to escape or transfer residues; cardboard boxes can absorb liquids and odors, risking contamination; glass jars are inert but fragile and may not seal as securely in field conditions. So the aluminum tin can with a lid optimally protects the evidence and maintains its integrity for analysis.