What type of material is primarily used for packaging in crime scene processing?

In crime scene processing, the primary material used for packaging is paper. This choice is preferred for several key reasons. Paper is non-reactive and does not generate static electricity, which can potentially alter or damage evidence, particularly sensitive items like trace evidence or biological samples.

Additionally, paper allows for ventilation, which helps to prevent the growth of mold and preserves the integrity of items that might have moisture. Using paper packaging can also aid in maintaining the chain of custody, as it can be easily sealed and labeled for identification.

While other materials like plastic and glass are sometimes used depending on the type of evidence (e.g., plastic bags for large items or glass vials for liquids), paper is generally favored for its versatility and protective qualities in the majority of packaging situations in crime scene investigations.