Classroom Dust
This is a tapelift sample from a school showing a mite leg,
Alternaria fungal spore, paper fiber,
skin flakes, clothing fiber, natural minerals, blue dry erase ink, and humus. The
mite leg appears to be from a Tyrophagus mite, a potent
allergen but not one detected by the common mite allergen tests. The blue spots and
stain in this image are all from the pigment in the blue
dry-erase dust present. Some of the skin flakes have picked up a bit of the blue
stain. From a health complaint standpoint the mite fragment
and the dry-erase debris are the most concerning. The mite fragment indicates the
presence of a potent allergen in the environment. The dry-erase
debris indicates an exposure to solvents primarily by the teacher in this
environment. The dry-erase pigments have not been around long enough to
know if they might generate health complaints.
Transmitted Off Crossed Polarized Light Illumination
Definition/Function:
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