The standard of turbidity shall be a water which contains 100 parts of silica per million in such a state of fineness that a bright platinum wire 1 millimeter in diameter can just be seen when the center of the wire is 100 millimeters below the surface... Preventive Medicine and Hygiene - Side 725av Milton Joseph Rosenau - 1913 - 1074 siderUten tilgangsbegrensning - Om denne boken
| Sir Norman Lockyer - 1904 - 688 sider
...turbidity was used for field observations. The figure 100 was taken to represent a water containing loo parts of silica per million, in such a state of fineness that a bright platinum wire one millimetre in diameter can just be visible when the centre of the wire is loo millimetres below... | |
| Sir Norman Lockyer - 1904 - 1034 sider
...turbidity was used for field observations. The figure 100 was taken to represent a water containing loo parts of silica per million, in such a state of fineness that a bright platinum wire one millimetre in diameter can just be visible when the centre of the wire is loo millimetres below... | |
| Geological Survey (U.S.) - 1902 - 1038 sider
...generally throughout the United States. PROPOSED TURBIDITY STANDARD." The standard of turbidity shall be a water which contains 100 parts of silica per million...of the observer is 1.2 meters above the wire, the observation being made in the middle of the day, in the open air, but not in sunlight, and in a vessel... | |
| New York (State). State Engineer and Surveyor - 1903 - 534 sider
...standard has been adopted by the United States Geological Survey." " The standard of turbidity shall be a water which contains 100 parts of silica per million...such a state of fineness that a bright platinum wire, one millimeter in diameter can just be seen when the center of the wire is 100 millimeters below the... | |
| Massachusetts - 1905 - 952 sider
...stilted by them, "this standard of turbidity shall be such that a water which contains 100 parts of Mlica per million In such a state of fineness that a bright...1 millimeter In diameter can just be seen when the centre of the wire Is 1(K) millimeters below the surface of the water ami the eye of the observer IB... | |
| George Chandler Whipple - 1905 - 428 sider
...turbidity has been denned by the US Geological Survey as follows : " The standard of turbidity shall be a water which contains 100 parts of silica per million...such a state of fineness that a bright platinum wire i millimeter in diameter can just be seen when the center of the wire is 100 millimeters below the... | |
| American Public Health Association - 1905 - 378 sider
...STANDARD. The standard of turbidity shall be that adopted by the United States Geological Survey, namely, a water which contains 100 parts of silica per million...such a state of fineness that a bright platinum wire one millimeter in diameter can just be seen when the center of the wire is 100 millimeters below the... | |
| American Public Health Association - 1905 - 372 sider
...STANDARD. The standard of turbidity shall be that adopted by the United States Geological Survey, namely, a water which contains 100 parts of silica per million...such a state of fineness that a bright platinum wire one millimeter in diameter can just be seen when the center of the wire is 100 millimeters below the... | |
| Geological Survey (U.S.) - 1906 - 1018 sider
...standard. — The standard of turbidity shall lie u water which contains 1<X> parts of silica |>er million In such a state of fineness that a bright platinum wire 1 millimeter in diameter can just he seen when the center of the wire is KM) millimeters Iwlow the surface of the water and the eye of... | |
| 1941 - 790 sider
...adopted by the Geological Survey and published in 1902 2- as follows: The standard of turbidity shall be a water which contains 100 parts of silica per million...of the observer is 1.2 meters above the wire, the observation being made in the middle of the day, in the open air, but not in sunlight, and in a vessel... | |
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