 | Science - 1895 - 1104 pages
...the solution is raised must not exceed 30° C. Mercurous sulphate, treated as described in 3, shall be added in the proportion of about 12 per cent by weight of the zinc sulphate crystals to neutralize the free zinc oxide remaining, and then the solution filtered, while still warm, into a... | |
 | National Academy of Sciences (U.S.) - Science - 1890 - 682 pages
...the solution is raised must not exceed 30° C. Mercurous sulphate, treated as described in 3, shall be added in the proportion of about 12 per cent by weight of the zinc sulphate crystals to nentralize the free zinc oxide remaining, and then the solution filtered, while still warm, into a... | |
 | Great Britain - Law - 1894 - 610 pages
...with the aid of gentle heat, but the temperature to which the solution is raised should not exceed 30' C. Mercurous sulphate treated as described in 3 should be added in the proportion of about 12 per cenc. by weight of the zinc sulphate crystals to neutralise any free zinc oxide remaining, and the... | |
 | Electric engineering - 1893
...•solution is raised should not exceed 30 deg. C. Mercurous sulphate treated as described in paragraph 4 should be added in the proportion of about 12 per cent, by weight of the zinc sulphate crystals, and the solution filtered while still warm, into a stock bottle. Crystals should form as it cools.... | |
 | American Institute of Electrical Engineers - Electric engineering - 1893 - 780 pages
...solution is raised should not exceed 30 decj. C. Mercurous sulphate treated as describe'l in paragraph 4 should be added in the proportion of about 12 per cent, by weight of the zinc sulphate crystals, and the solution filtered while still warm, into a stock bottle. Crystals should form as it cools.... | |
 | Electrical engineering - 1893 - 630 pages
...which the solution is raised should not exceed SOdeg. C. Mercurous sulphate, treated as described in 4, should be added in the proportion of about 12 per cent, by weight of the zinc sulphate crystals, and the solution filtered while still warm into a stock bottle. Crystals should form as it cools. 4.... | |
 | Silvanus Phillips Thompson - Electric power - 1894 - 668 pages
...the aid of gentle best, but the temperature to which the solution is raised should not exceed ;to-* C. Mercurous sulphate treated as described in 3 should...per cent by weight of the zinc sulphate crystals to neutralize any free zinc oxide remaining, and the solution Iiltered, while still warm, into a stock... | |
 | British Association for the Advancement of Science - Science - 1894 - 1272 pages
...which the solution is raised should not exceed 30° C. Mercurons sulphate treated as described in 4 should be added in the proportion of about 12 per cent, by weight of the zinc sulphate crystals, and the solution filtered, while still warm, into a stock bottle. Crystals should form as it cools.... | |
 | Engineering - 1894 - 876 pages
...the solution is raised must not exceed 30° C. Mercurous sulphate, treated as described in 3, shall be added in the proportion of about 12 per cent, by weight of the zinc sulphate crystals to neutralize the free zinc oxide remaining, and then the solution filtered, while still warm, into a... | |
 | British Association for the Advancement of Science - Science - 1894 - 1104 pages
...twice its weight of crystals of pure zinc sulphate, and adding zinc oxide in the proportion of about 2 per cent, by weight of the zinc sulphate crystals to neutralise any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature to which the... | |
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... any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature to which the solution is raised should not exceed 30° C. 
