Trace Evidence - Paint Flashcards
A paint is a suspension of ______ and _______ intended to ______ or ______ a surface
pigments
additives
colour
protect
What is a pigment?
a pigment is a fine powder that is insoluble in the medium in which it is dispersed.
A pigment may be _____, _______ or a _______
organic
inorganic
mixture
What are the four major categories of paint?
Architectural Paints
Product Coatings
Special Purpose Coatings
Art Paints
What are Architectural Paints?
Household paints found in residences and businesses
What are Product Coatings?
Are applied in the manufacturing process, includes Automobiles
What are Special Purpose Coatings?
Fulfil some specific need beyond protection or aesthetic improvement
Skid Resistant, Water Proofing, Luminescence
What are Art Paints?
Used in artistic compositions and are often found in forgery cases
What is the most common paint found at crime scenes?
White paint
What paint is the most difficult to identify?
White paint
How are paint samples taken?
Using a Beecham’s fold or tissue paper
What is the Malcolm Fox case study
Operation Peanut
Summer 1984
Across 3 counties
M committed many burglaries break-ins etc
Was caught when yellow paint scratch matched his vehicle.