Question: Why Is Evidence Placed In A Paper Bag Instead Of Plastic?

Each item is placed in a separate paper bag to prevent cross-contamination.

Plastic bags are not used because moisture can collect within the bag and alter the evidence (Figure 3).

Do not remove attached hairs or fibers from clothing.

Use protective paper to prevent stains from touching.

Why is evidence placed in a paper bag rather than a plastic one?

First, never place any evidence that may contain DNA in plastic bags because plastic will retain moisture that will damage DNA. Items such as masks, eyeglasses, bottles, etc., should be taken as is and placed in a paper bag to be sent for testing.28 Mar 2013

What is an evidence bag?

Paper bags are easily sealed with our SealGuard Evidence Tape or Evidence Box Sealing Tape. The convenient sizes allow for the packaging of a variety of evidence items including clothing, shoes, and drugs. Because the paper allows for the evidence to dry, they are the best choice for packaging DNA sensitive evidence.

How do you package different types of evidence?

  • Wrapping & Packing: All glass bottle with plastic cap. Pack in sawdust or other packing material.
  • Identification: Label or tag on outside of container. Show type of material, date obtained,
  • Amount Desired: Standard – 1 ft. Evidence – All.

How do you collect evidence from paper?

Place small glass fragments in paper bindles, then in coin envelopes, pill boxes, or film cans which can be marked and completely sealed. Place large glass fragments in boxes. Separate individual pieces with cotton or tissue to prevent breakage and damaged edges during shipment. Seal and mark the box containing them.

What does Chain of custody mean?

Chain of custody (CoC), in legal contexts, is the chronological documentation or paper trail that records the sequence of custody, control, transfer, analysis, and disposition of physical or electronic evidence.

How do you seal an evidence bag?

Package each piece of evidence separately, and properly label, seal, and document it. Evidence tape is designed to fracture easily to indicate tampering; it’s not meant to hold bags shut and boxes together. Use packing tape to seal bags and boxes, then place evidence tape over the packing tape.12 Feb 2013

What is codis and how is it used?

The Combined DNA Index System, or CODIS, blends forensic science and computer technology into a tool for linking violent crimes. It enables federal, state, and local forensic laboratories to exchange and compare DNA profiles electronically, thereby linking serial violent crimes to each other and to known offenders.

How do you package blood evidence?

Collecting Liquid or Moist Blood – Small Quantity

  1. For each separate blood drop, stain or smear, the investigator should use only one blood swab to collect a sample.
  2. Allow swabs to air-dry.
  3. The dried swabs can be placed in a paper container (e.g. paper envelope or bag).
  4. Properly label and seal the container.