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28 Cards in this Set

  • Front
  • Back
3 important factors must be considered in order to introduce evidence in a trial.
a. the article must be properly identified.
b. continuity or chain of custody.
c. competency must be proved.
systematic procedure for proof of identity.
a. protection.
b. collection.
c. identification.
d. preservation.
e. transmission.
f. disposition.
handling paper evidence
with forceps or tongs and placed into a cellophane envelope.
handling glass
placed over pegs imbedded into a board.
handling firearms, knives, and tools.
tied to a board by means of strings then packing securly into a cardboard box.
true or false.
it is better to take too many photographs than too few.
handling hairs and fibers.
should be picked up with forceps or tweezers and placed ina filter paper which is then folded into a drugist fold. cellophane tape may be used to seal the edges. the folded paper is then placed into a pillbox.
handling dirt, soil, particles, filings, and fragments
should be placed in filter paper, which is folded and sealed then put into a pill box.
handling bullets and fired cases
these should be put into seperate small boxes and surrounded with cotton.
handling clothing
each article of clothing should be packed seperately in a paper bag. wet clothes should be air dried.
handling wet blood
approx 5cc should be collected. if it is a small quantity it should be collected with a cotton swab or gauze pad. it is then air dried and placed in an envelope, a test tube or sterile container.
what is edta
a preservative used to preserve blood.
handling dry blood
when found on clothing or small objects the items should be collected. when the area is to large a swab is moistened with distilled water.
collecting semen
items need to be airdried before being packaged.
collecting saliva
it should be collected in a test tube or with a swab and air dried before packaging.
what type of plaster is used in casting
dental stone or plaster of paris.
what is a latent print
hidden or relatively invisible and must be developed by a special method.
what is a plastic print
found on objects such as soap, butter, putty, melted wax. impressions are depressed below the original surface.
what is a visible print
left by fingers covered with a colored material, such as paint, blood, grease, ink or dirt.
powder is recommended on what types of surfaces to develop latent prints
hard, dry, and smooth
3 qualities of a powder
should be adhesive
should not absorb water
should photograph well.
white or grey powders work best on what types of surfaces
black powder works best on what type of surface
fluorescent powder work best on what type of surface.
multi-colored surfaces
iodine method is best used on what type of surface
porous, such as paper and card board
cyanoacrylate method is best used on what type of surface
nonporous, such as glass, metal, plastic, and leather.
silver nitrate works best on
paper and wood
nunhydrin works best on
paper and wood