The book Laboratory Manual of Elementary Colloid Chemistry was written by author Emil Hatschek Here you can read free online of Laboratory Manual of Elementary Colloid Chemistry book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Laboratory Manual of Elementary Colloid Chemistry a good or bad book?
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An extremely convenient method of making small ultra-filters consists in the use of the seamless ULTRA-FILTERS. 75 extraction thimbles, which can be obtained in a variety of sizes. If apparatus for using them with vacuum is available, they may be impregnated dry, as described under (i) ; otherwise it is more con- venient to impregnate them wet and use them as spontaneous filters by placing them in a loosely - fitting cylindrical funnel. LITERATURE. For sizes of particles retained, determination... of diameter of pores, etc. , see the original papers by H. Bechhold, Zeitschr. F. Phys. Chem. , 64, 328 (1908) ; Kott. - Zeitschr. , II. , 3 and 33 (1907) ; III, 226 (1908). CHAPTER X. OPTICAL METHODS OF EXAMINATION. THE simplest and most sensitive method of show- ing the presence of disperse matter in a liquid is examination by the Tyndall cone, i. E. , a narrow beam of intense light projected through the liquid and viewed at right angles to the direction of the axis of the beam. The liquid to be examined is placed in a prismatic cell ; the small cemented specimen cells supplied by most makers of apparatus are suitable.
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