Final answer:
The correct procedure for handling trace evidence involves using sterile tools and containers, avoiding cross-contamination, and proper labeling and sealing to ensure evidence integrity.
Step-by-step explanation:
The proper procedure for the collection, protection, and packaging of trace evidence is best summarized by option A: using clean tools and containers, avoiding cross-contamination, labeling and sealing packages properly. The process requires meticulous attention to detail to maintain the integrity of the evidence.
- Use clean tools and containers to ensure that no external contaminants are introduced to the evidence.
- Avoid cross-contamination by using individual packaging for each piece of evidence and by handling evidence with sterilized instruments such as forceps and tweezers.
- Label and seal packages properly to provide a clear chain of custody and to prevent tampering or loss of the evidence.
Do not wash the evidence or store it in damp environments as this can destroy vital information. Do not package evidence in plastic bags as they can trap moisture and lead to degradation of the evidence. Always follow the specific guidelines provided for the handling of special types of trace evidence, and adhere to laboratory safety rules, such as wearing protective gear and cleaning any tools and surfaces with appropriate solutions, such as 70% ethanol.
Answer: A) Use clean tools and containers, avoid cross-contamination, label and seal packages properly