What should be used to collect firearms evidence, according to guidelines?

The use of surgical gloves is crucial in collecting firearms evidence because they provide a barrier that prevents contamination of the evidence. Firearms can carry trace evidence, DNA, and fingerprints that may be compromised if an investigator’s bare hands come in contact with them. Surgical gloves are designed to be durable while also offering a level of sensitivity that allows investigators to handle evidence carefully without introducing any foreign materials.

In terms of evidence preservation, gloves are essential during the entirety of the collection process. They not only help maintain the integrity of the evidence but also ensure that the forensic chain of custody is protected, which is critical for legal proceedings. By wearing gloves, investigators can minimize the risk of accidental alteration of the evidence, which is fundamental in maintaining the reliability of forensic analysis.

Other methods of collection like plastic bags, steel containers, and thick paper serve different purposes in evidence preservation, but they do not directly involve preventing contamination during handling in the same way surgical gloves do. Collecting firearms evidence demands careful consideration at every step, and using gloves during the initial handling of the evidence is a primary guideline to follow.