INKS & DOCUMENTS
This component in ink formulations dissolves or disperses the colorant and other ingredients
What is a solvent?
This ubiquitous fiber has a distinctive ribbon-like appearance under the microscope
What is cotton?
These three elements compose traditional black powder
What are potassium nitrate, sulfur, and carbon?
This test shows orange specks indicating nitrites in GSR
What is the Griess test?
These two types of glands produce most fingerprint residue
What are eccrine and sebaceous glands?
This process reveals indented writing on paper documents using electrostatic techniques
What is ESDA (Electrostatic Detection)?
This optical property, measured with the Becke line, helps identify glass and fibers
What is refractive index?
In fire debris analysis, these compounds are often missing due to weathering
What are volatile compounds?
hese three elements in spherical particles are characteristic of GSR
What are lead, barium, and antimony?
This chemical develops fingerprints on paper by reacting with amino acids
What is ninhydrin?
Unlike pigments, these colorants fully dissolve in solvents
What are dyes?
These multiple layers make automotive paint unique among industrial coatings
What are color coats in sequence?
This historical explosive contains nitroglycerin and nitrocellulose as main components
What is double-base smokeless powder?
This process can restore obliterated serial numbers on metals
What is chemical etching?
This chemical specifically reacts with lipids in fingerprints
What is Oil Red O?
Different inks may be detected under alternate light sources due to variations in this property
What is luminescence?
When examining cross-sections of automotive paint, this analytical sequence is followed
What is microscopy, then non-destructive tests, then destructive tests?
Unlike normal combustion, these reactions use this from within their molecular structure
What is oxygen (or oxidizer)?
GSR evidence can only prove this about a person's proximity to a firearm
What is presence in an environment where a gun was fired?
This strategy improves visualization of prints on difficult surfaces
What is sequential processing?