Photographic Gallery

Back to Photogallery - - Click on images for a larger view and more information - - Dispersion Staining, Phase Contrast K. G. Schmidt wrote a paper on the dispersion effects visible with phase contrast illumination in 1958. Phase contrast dispersion staining works best with thin particles, such as asbestos fibers. It is extremely sensitive and can easily distiguish asbestos fibers in complex matrices. It has the added advantate of high image resolution and it produces complimentary colors in the same image so that the wavelength of the refractive index match can be more closely ascertained.