Which type of containers is recommended for biological evidence packaging?

Biological evidence packaging is crucial for ensuring the integrity and preservation of samples, such as blood, saliva, or other bodily fluids, which are often subject to degradation or contamination. The recommended method for packaging biological evidence is using paper bags and manila envelopes.

Paper materials allow biological samples to breathe, reducing humidity buildup that could lead to mold growth or degradation of the evidence. Unlike plastic, which can trap moisture, paper helps maintain an appropriate environment for the samples. Additionally, paper packaging minimizes the risk of chemical reactions that could occur with other materials, ensuring that the biological evidence remains in its most unaltered state for analysis and forensic examination.

While other materials such as plastic bags, glass jars, and metal boxes have their uses in various contexts, they are not considered optimal for packaging biological evidence due to issues like moisture retention, risk of contamination, and limited breathability, which can compromise the evidence's integrity during storage and transportation.