 | Great Britain - 1860 - 1134 sider
...respect to its Purity be so far free from Ammonia and Sulphuretted Hydrogen that it shall not discolour either Turmeric Paper or Paper imbued with Acetate...of Gas issuing for One Minute under a Pressure of Five Tenths of an Inch of Water, and shall not contain more than Twenty Grains of Sulphur in any Form... | |
 | Henry Banister (writer on gas.) - 1863 - 112 sider
...respect to its purity, be so far free from ammonia and sulphuretted hydrogen, that it shall not discolour either turmeric paper or paper imbued with acetate...under a pressure of five-tenths of an inch of water." BISULPHIDE OF CARBON. The next subject to which attention must be given is one of considerable importance:... | |
 | John Scott, Great Britain. Court of Common Pleas - 1865 - 566 sider
...sulphuretted hydrogen that it shall not discolour either turmeric paper or paper imbued with either acetate or carbonate of lead, when those tests are...more than twenty grains of sulphur in any form in 100 cubic feet of gas: provided that any gas Company, and the local authorities of.the district supplied... | |
 | Henry Banister (writer on gas.) - 1867 - 212 sider
...that it shall not discolour either turmeric paper, or paper imbued " with acetate of lead, when these tests are exposed to a current of gas issuing " for...under a pressure of five-tenths of an inch of water.-- In order to detect the presence of ammonia, it is sufficient to allow a jet of gas to blow upon a piece... | |
 | 1872 - 268 sider
...its purity, be so far free from ammonia and sulphuretted hydrogen, that it shall not either discolour turmeric paper, or paper imbued with acetate or carbonate...of gas issuing for one minute under a pressure of -fo of an inch of water. In respect to these tests it will be sufficient to say, that their efficiency... | |
 | District of Columbia. Health Department - 1873 - 224 sider
...paper or paper imbued with acetate or carbonate of lead, when those tests are exposed to a iMil-rent of gas issuing for one minute under a pressure of five-tenths of ;m inch of water, and shall not eontain more than twenty grains of sulphur in any form in one hundred... | |
 | Great Britain, Edmund Humphrey Woolrych - 1880 - 966 sider
...respect to its purity be so far free from ammonia and sulphuretted hydrogen that it shall not discolour either turmeric paper or paper imbued with acetate...minute under a pressure of five-tenths of an inch ot water, ami shall not contain more than twenty grains of sulphur in any foim in one hundred cubic... | |
 | 1865 - 682 sider
...it shall not discolour turmeric paper or paper imbued with acetate or carbonate of lead when these tests are exposed to a current of gas issuing for one minute under a pressure of j^ths of an inch of water. These impurities were so easily recognised, and the process for detecting... | |
 | American Gas Institute - 1910 - 996 sider
...shall not discolor. . . .paper imbued with acetate of lead, or carbonate of lead, when the paper is exposed to a current of gas issuing for one minute under a pressure of five-tenths inches of water, and shall not contain more than 20 grains of S in any form in 100 cubic feet of gas.... | |
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... such sperm candles ; and each such gas shall, with respect to its purity, be so far free from ammonia and sulphuretted hydrogen that it shall not discolour either turmeric paper or paper imbued with acetate or carbonate of lead, when those tests are... 