OBSERVING APPARATUS FOR MINUTE MATERIAL IN FLUID

摘要

PURPOSE:To observe a minute material in fluid continuously and readily without taking out the minute material to the outside of a system by introducing the minute material in the fluid into a narrow slit, and observing the minute material with light which is transmitted through the slit. CONSTITUTION:A slit 10 is formed of a slit plate 9 and one surface of a prism 8 which is in parallel with the slit plate 9. The slit 10 is immersed in sludge water. Therefore, the sample in the sludge water automatically enters into the slit 1. The inputted sample is fixed by adjusting the width of the slit. The transmitting light emitted from a light source is directly projected on the sample, and the sample is observed. As the light source, the prism 8 wherein the light which is inputted from an external light source 4 is refracted and the refracted light is outputted as the transmitting light is used. The illuminated minute material is observed from the outside of a tank through an objective lens 3 which is contained in an adaptor 2 and the slit plate 9.