|
Ultraviolet light can be used
for close examination of the
article or area to reveal
evidence that may not be visible
to the naked eye. UV light can
also be used to sometimes reveal
hidden blood and fingerprints.
This
portable UV light provides 4
watts of illumination that can
help to isolate suspected stains
on large areas such as bedding,
furniture, or automobile
interiors.
However, a
UV light CANNOT
conclusively identify a semen
stain or any other kind of stain
because everything including
toothpaste, coffee with cream
and sugar, urine, and even the
brighteners in some laundry detergents will
all fluoresce when subjected to U.V. or "black" light.
Do I need a U.V or "Black Light"
to use CheckMate? |
|
|
No,
a black light is not needed to
perform the CheckMate test. The
ultra violet light is for when
you're testing a large area like
a blanket or carpet and you
don't know where to begin
testing. A light cannot identify
a stain as semen, but once you
isolate a stained area with a
light, then you can test it with
CheckMate. Have you ever seen
one of those commercials on
television advertising black
lights to locate cat urine
stains? Now, do you think a
black light can identify a semen
stain? Of course not, many
different substances will
fluoresce when subjected to
ultra violet light and that's
why many investigative
professionals jokingly refer to C.S.I.
as "Crime Show
Inaccuracy," because things
simply do not happen like you
see on television.
|
