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" The flame should be fully 20 cm high when burning free, and the determination should be made in a place free from draughts. The upper surface of the cover should burn clear, but the under surface should remain covered with carbon. "
The Philippine Journal of Science - Seite 42
1907
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Journal of the Chemical Society, Band 74,Teil 2

Chemical Society (Great Britain) - 1898 - 1020 Seiten
...a tightly fitting cover. This is then heated for 7 minutes over the full flame of a Bunsen burner. The crucible should be supported on a platinum triangle with the bottom 6 to 8 cm. above the top of the burner ; the flame should be 20 to 25 cm. high when burning free, and the...
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Chemical News and Journal of Industrial Science, Band 78

1898 - 356 Seiten
...platinum crucible, weighing 20 to 30 grms. and having a tightly fitting cover. Heat over the full flame of a Bunsen burner for seven minutes. The crucible should...supported on a platinum triangle with the bottom 6 to 8 cm above the top of the burner. The flame used should be 20 to 25 cm high when burning free, and the...
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The Chemical Analysis of Iron: A Complete Account of All the Best Known ...

Andrew Alexander Blair - 1876 - 456 Seiten
...crucible weighing 20 or 30 grammes and having a tightly fitting cover. Heat over the full flame of a Bunsen burner for seven minutes. The crucible should...be supported on a platinum triangle with the bottom from 6 to 8 cm. above the top of the burner. The flame should be fully 20 cm. high when burning free,...
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Geological Survey of Michigan

Michigan. Geological Survey - 1900 - 838 Seiten
...platinum crucible, weighing 20 to 30 grams and having a tightly fitted cover. Heat over the full flame of a Bunsen burner for seven minutes. The crucible should...be supported on a platinum triangle with the bottom (i to S centimeters above the top of the burner. The flame used should be 20 to 25 centimeters high...
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Report of the Philippine Commission to the Secretary of War ... 1900 ..., Teil 1

United States. Philippine Commission (1900-1916) - 1901 - 608 Seiten
...platinum crucible weighing 20 to 30 grams and having a tightly fitting cover. Heat over the full flame of a Bunsen burner for seven minutes. The crucible should...to 8 centimeters above the top of the burner. The flame should be fully 20 centimeters high when burning free, and the determination should be made in...
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Bulletin, Ausgaben 319-324

1908 - 874 Seiten
...crucible weighing 20 or .'!(> grams and having a tightly fitting rover. Heat over the full flame of a Bunsen burner for seven minutes. The crucible should...supported on a platinum triangle, with the bottom ti to S centimeters above the top of the burner. The flame should be fully 20 centimeters high when...
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The Chemical Engineer: A Monthly Journal of Practical, Applied ..., Bände 9-10

1909 - 516 Seiten
...crucible weighing 20 or 30 grams and having a tightly fitting cover. Heat over the full flame of a Bun sen burner for seven minutes. The crucible should be supported on a platinum triangle with the bottom 6 to 8 cm. above the top of the burner. The flame should be fully 20 cm. high when burning free, and the determination...
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The School of Mines Quarterly, Band 25

1904 - 480 Seiten
...crucible, weighing 20-30 grams, and having a well-fitting cover. Heat over the full flame of a Bunser burner for seven minutes. The crucible should be supported on a platinum triangle with the bottom 6-8 cm. above the top of the burner. The flame should be 25 cm. high, and the determination made in...
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Quantitative Analysis for Mining Engineers

Edmund Howd Miller - 1904 - 218 Seiten
...crucible, weighing 20-30 grams, and having a well-fitting cover. Heat over the full flame of a Bunser burner for seven minutes. The crucible should be supported on a platinum triangle with the bottom 6-8 cm. above the top of the burner. The flame should be 25 cm. high, and the determination made in...
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The Modern Asphalt Pavement

Clifford Richardson - 1905 - 616 Seiten
..."platinum crucible weighing 20 or 30 grams and having a tightly fitting cover. Heat over the full flame of a Bunsen burner for seven minutes. The crucible should...supported on a platinum triangle with the bottom 6 to 8 cm. above the top of the burner. The flame should be fully 20 cm. high when burning free, and the determination...
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