Glass Fiber from Wallboard Joint Tape
This is glass fiber from wallboard joint tape mounted in
1.550 high dispersion refractive index mounting medium
and viewed using phase contrast dispertion staining. The blue color with an orange
halo indicates that the glass has a refractive index of
about 1.552.
Transmitted Phase Contrast Dispersion Staining
Definition/Function:
The Joint Tape used to smooth out the joints between drywall panels is reinforced with
glass fiber.
Significance in the Environment:
Glass fiber from wallboard joint tape is often a construction residue in new or
remodeled buildings. It is seldom at levels that results in
health complaints by itself but it can add to the overall level of glass fiber
contamination related to construction residues.
Characteristic Features:
This glass fiber typically has a refractive index of about 1.550 and is about 10
micrometers in diameter.
Associated Particles:
References:
