Paint, Soil & Glass Flashcards
What is paint?
A suspension of pigments and additives intended to colour and protect a surface.
What is pigment?
A fine powder that is insoluble in its parent medium.
What is the binder/vehicle?
The portion that allows paint to disperse evenly.
What are the 3 types of paint?
Architectural paints, product coatings and special-purpose coatings
What are Th r 4 stages of automotive paint?
Pretreatment, primer, colour coat and clear coat
Where should paint samples be taken form?
Close to but not from the damaged area
What is the primary reason for paint analysis?
To determine its chemical composition.
Where is paint typically seen?
I’m vehicle related crimes.
How do we match paint? (3)
Physical match, colour and texture and chemical analysis.
How is glass usually found?
In small fragments
How is glass density measured?
The sink-float method
What are soil and glass primarily made from?
Minerals
When is soil most likely to be used as evidence?
When a footprint or tyre track is in it.
What is the goal of forensic soil analysis?
To match the soil found at a crime scene to its source.
