 ... cm. deep in a beaker, placed in a good light on black glass or black glazed paper, must appear dark and free from opalescence when viewed from above. Any necessary mode of filtration may be employed, but if such filtration causes any appreciable loss...  Collegium ... - Page 2501907Full view - About this book
 | Samuel Russell Trotman - Chemistry, Technical - 1908 - 318 pages
...greater part of the tannin is removed at a temperature not exceeding 50° C. (2) Total solubles must be determined by the evaporation of a measured quantity...correction must be determined and applied, as described in section 6. Filtration must take place at a temperature between 15° C. and 20° C., or the actual temperature... | |
 | Samuel Russell Trotman - Chemistry, Technical - 1908 - 390 pages
...greater part of the tannin is removed at a temperature not exceeding 50" C. (2) Total solubles must be determined by the evaporation of a measured quantity...correction must be determined and applied, as described in section 6. Filtration must take place at a temperature between 15" C. and 20° C., or the actual temperature... | |
 | Henry Richardson Procter - Leather - 1908 - 498 pages
...electric light filament must be distinctly visible through at least 5 cm. thickness, and a layer of I cm. deep in a beaker placed in a good light on black...correction must be determined and applied as described in Section 6. Filtration must take place at a temperature between 1 5° C. and 20° C., or the actual... | |
 | Hugh Garner Bennett - Leather - 1909 - 452 pages
...bright object such as an electric light filament must bo distmctly visible through at least a cms. thickness, and a layer of 1 cm. deep in a beaker placed...correction must be determined and applied as described in section 6. Filtration must take place at a temperature between l5° C. and 20' C. Evaporation to dryness... | |
 | Hugh Garner Bennett - Leather - 1909 - 452 pages
...deep in a beaker placed in a good light on black glass or black glazed paper must appear dark and froo from opalescence when viewed from above. Any necessary...correction must be determined and applied as described in section 6. Filtration must take place at a temperature between 15° C. and 20° C. Evaporation to dryness... | |
 | Alfred Henry Allen - 1911 - 732 pages
...electric light filament must be distinctly visible through at least 5 cm. thickness, and a layer of i cm. deep in a beaker placed in a good light on black...when applied to a clear solution a correction must be ascertained and applied as decsribed in Section VI. Filtration shall take place between the temperatures... | |
 | Alfred Henry Allen - Chemistry, Analytic - 1911 - 730 pages
...electric light filament must be distinctly visible through at least 5 cm. thickness, and a layer of r cm. deep in a beaker placed in a good light on black...when applied to a clear solution a correction must be ascertained and applied as decsribed in Section VI. Filtration shall take place between the temperatures... | |
 | Alfred Henry Allen - Analytical chemistry - 1911 - 730 pages
...electric light filament must be distinctly visible through at least 5 cm. thickness, and a layer of i cm. deep in a beaker placed in a good light on black...when applied to a clear solution a correction must be ascertained and applied as decsribed in Section VI. Filtration shall take place between the temperatures... | |
 | Georg Lunge - Analytical chemistry - 1914 - 586 pages
...an electric light filament, must be distinctly visible through at least 5 cc thickness and a layer I cm. deep in a beaker placed in a good light on black...correction must be determined and applied, as described in section 6. Filtration shall take place between the temperature of 15° and 20°. Evaporation to dryness... | |
 | Paul Dumesny, J. Noyer - Wood - 1921 - 380 pages
...be removed from the influence of heat as soon as possible. Paragraph 2. — The total solubles must be determined by the evaporation of a measured quantity...correction must be determined and applied as described in paragraph 6. Filtration shall take place between the temperatures of 15° C. and 20° C. Evaporation... | |
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