Fingerprints

Question 1

Can you use one FEN for more than one latent print?

Answer 1

Yes multiple latents can be on the one FEN

Question 2

What does CARPET stand for?

Answer 2

Composition
Amount
Receiving surface
Position
Environment
Time of contact

Question 3

What camera settings should you use for a examination photograph of a print ?

Answer 3

ISO 100
Shutter 125 or higher
Aperture f11 or above

Question 4

What temp should you use for the sluperglue cabinet?

Answer 4

120 degrees for liquid glue
230 degrees for powder

Question 5

What chemical is used to enhance bloody prints?

Answer 5

Amido Black

Question 6

What is the optimal humidity setting for superglue fuming ?

Answer 6

80% humidity

Question 7

What chemical is used to enhance superglue treated prints?

Answer 7

Ardrox

Question 8

Fluoro magnetic prints should use what lighting to enhance for photography?

Answer 8

An orange filter with 505nm setting
OR
UV with safety glasses

Question 9

When would you use Ninhydrin over Indanedione?

Answer 9

When the paper is fluorescent or glows.

Question 10

Can you heat up thermal paper after chemical process?

Answer 10

No it will make it go black

Question 11

What is the superglue fuming process ?

Answer 11

In a sealed chamber, liquid superglue is heated to create Cyanocrylate fumes.
Water is also heated to increase humidity.
I’m the presence of humidity, cyanocrylate fumes transform into a solid in a process called polymerisation.
Cyanocrylate fumes are attracted to greasy and moist surfaces found on latent fingerprints, and solidifys into a hard, white polymer that can be visible.

Question 12

What are the four classes of deceased persons?

Answer 12

Fresh
Decomposed
Macerated (wet)
Desiccated (dry)

Question 13

How do you break rigor?

Answer 13

Manipulate the main joints and than work your way down to the smaller joint. E.g. shoulder down to hand and finger

Question 14

Reasons for fingerprint ID of deceased?

Answer 14

Establish ID
Body unknown
Unrecognisable
Suspected ID only not confirmed
Foul play
Police investigation (murder)
Disaster victims
Prevent impersonation
Orders from the coroner
Elimination of fingerprints

Question 15

Other than PPE what else can you find in the lab for WHS?

Answer 15

First aid kit
Duress alarm
Emergency shower
Emergency eyewash
Fire blanket
Fire extinguisher

Question 16

Can all chemicals be store together?

Answer 16

No some chemicals need to be stored separately and more dangerous chemicals are kept in a lockable cabinet

Question 17

When taking photographs of print through glass what must you do?

Answer 17

Write Thru glass on the FEN so FPB know that it’s reversed

Question 18

Can you use fingerprint powders on the deceased at the scene to obtain a fingerprint photograph?

Answer 18

No, it’s not to be done at the scene (only photographs alone) unless coroners permission

Question 19

What are the minimum details required on a FEN?

Answer 19

Date
Surface/ location
If vehicle- rego or vin or description
Other location- address or surname of complainant/ victim
Property- property tag number or description

Question 20

Can abbreviation be used on the FEN?

Answer 20

Yes but not on the exhibit FR entry

Question 21

What are the stages of examination?

Answer 21

1. Visual
2. Lighting
   3.

Question 22

What is a porous surface?

Answer 22

E.g. fabric, wood, paper.

Question 23

What chemical examinations can be used on porous surfaces?

Answer 23

Ninhydrin
Indanedione
Physical developer and Oil Red O

Question 24

What is a non porous surface ?

Answer 24

E.g. glass, plastic, metal.

Question 25

What type of development would you use on non porous surfaces?

Answer 25

Black, white, fluorescent and magnetic powders.
Wet powder
Small partial reagent
Superglue
Fuming enhancement
Vacuum metal deposition

Question 26

What do you need to note on the chemical bottles before use?

Answer 26

Batch number
Prep date
Expiry date
Who prepared it
If it’s been batch tested
Check it’s working not stock solution