Which practice is specifically listed for drying wet evidence?

• A. Air dry
• B. Place clean paper beneath
• C. Plastic clothes hanger
• D. Protect from heat and humidity

Answer: (A)

Air drying is the recommended way to dry wet evidence because it lets moisture evaporate naturally without applying heat, pressure, or artificial airflow that could alter the evidence. Direct heat can cause artifacts, color changes, distortion, or diffusion of liquids that might move traces or degrade materials, and humidity can encourage mold or other damage. Letting the item dry in a clean, controlled environment preserves the integrity of the evidence and any potential traces.

Placing clean paper beneath can help absorb some moisture, but it isn’t the primary drying action. A plastic clothes hanger isn’t a standard drying method and can introduce stress or contamination. Protecting from heat and humidity is a good precaution, but drying itself should be done by air drying rather than using heat or other methods.