Dispersion Staining, Darkfielduse of darkfield dispersion staining for the analysis of quartz in dust samples. This technique was further refined by R. G Speight in the 1970's by using a more restricked cone of light from the condenser. Match at 589 nanometers wavelength ![]() Match at 560 nanometers wavelength, Chrysotile Asbestos Parallel to length ![]() Match at 620 nanometers wavelength, Chrysotile Asbestos Perpendicular to length ![]() Match at 460 nanometers wavelength, Amosite Asbestos Parallel to Length, Anthophyllite Asbestos Parallel to Length, Tremolite Asbestos Parallel to Length. ![]() ![]() ![]() Match at 650 nanometers wavelength, Amosite Asbestos Perpendicular to Length, Anthyophyllite Asbestos Perpendicular to Length, Tremolite Asbestos Perpendicular to Length (660). ![]() ![]() ![]() Match at 670 nanometers wavelength; the colors are much more brilliant with the 10X objective. ![]() ![]() Match at 500 nanometers wavelength ![]() Match at 550 nanometers wavelength; the colors are much more brilliant with the 10X objective. ![]() Match at 500 nanometers wavelength; the colors are much more brilliant with the 10X objective. ![]() ![]() |