Transmitted Oblique Darkfield Dispersion Staining, Single Polarizing Filter Perpendicular to Length
The D-line refractive index across the width of this sample of amosite asbestos is about 1.675. It matches the
refractive index of the Cargille High Dispersion 1.680 liquid at a wavelength of about 650 nanometers. At this
wavelength the Cargille liquid has a refractive index of about 1.671, as does the amosite. This Type of Dispersion
Staining produces a single color for any given wavelength match between a given liquid and solid with a fixed single
linear polarizing filter. Oblique condenser darkfield dispersion staining produces the same colors as objective cental
stop dispersion staining but the particles are in much better focus. As a result it is easier to see the particles that
are producing the effect.