You are at a crime scene, collecting glass evidence. which of the following is the least desirable/preferred method for processing the crime scene for glass fragments?

At a crime scene, one must be very careful at collection and processing of glass fragments.
1) Appropriate collection and preservation techniques should be used for obtaining sample from glass pieces/fragments.
2) Wear latex gloves and use clean forceps.
3) The information should be recorded correctly.

What are the answers