ETC Storage & Preservation 4

Question 1

Which of the following is a PRIMARY concern when storing luminescent or fluorescent evidence markers used in crime scene documentation?

Accepted Answer

Exposure to ultraviolet light causing fading

Answer

Fluorescent markers degrade under prolonged UV exposure; they should be stored in opaque, sealed containers away from light sources.

Question 2

A porous surface swab containing touch DNA is BEST preserved by:

Accepted Answer

Air-drying and then storing in a paper envelope in a cool, dry location

Answer

Touch DNA swabs must be air-dried before packaging to prevent microbial growth, then stored cool and dry to maintain DNA integrity.

Question 3

What is the purpose of using tamper-evident tape on evidence packaging?

Accepted Answer

To provide visible indication if a package has been opened

Answer

Tamper-evident tape leaves a visible pattern or void message if removed, providing proof that a package has been accessed without authorization.

Question 4

When storing controlled substance evidence for an extended period, which condition poses the GREATEST risk of degradation?

Accepted Answer

Temperature fluctuations and high humidity

Answer

Temperature fluctuations and humidity accelerate chemical decomposition of controlled substances, potentially altering potency measurements used in prosecution.

Question 5

A technician packages a knife with dried blood in a cardboard box. What labeling information is LEAST critical to include on the outside of the package?

Accepted Answer

The technician's favorite evidence locker

Answer

A technician's personal preferences have no evidentiary relevance; all other listed elements are required for proper chain of custody and safe handling.

(ETC) Evidence Technician Certification Practice Test

(ETC) Evidence Technician Certification Practice Test

ETC Storage & Preservation 4