When considering what packaging material is optimal for a type of biological
evidence there are two vital things to consider: degradation and contamination (1).
Biological evidence collected from a crime scene is brought to the laboratory, however,
immediate testing upon arrival is highly unlikely (2). Therefore, the packaging must be
suitable for transportation as well as storage. During the storage phase, if improper
packaging is utilized, degradation and/or contamination could occur.Kraft Stock Envelope
The paper envelopes used for this study were kraft stock coin envelopes (Quality
Park, Minneapolis, MN) measuring 3½ inches (in.) by 6½ in. (Figure 1). Each of the
envelopes was sealed with clear plastic packaging tape.