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Books Bücher 1 - 10 von 52 in Place 1 gram of fresh, undried, powdered coal in a platinum crucible weighing 20...
" Place 1 gram of fresh, undried, powdered coal in a 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 be supported on a platinum triangle, with... "
Annual Reports of the Secretary of War - Seite 441
von United States. War Dept - 1909
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Journal of the Chemical Society, Band 74,Teil 2

Chemical Society (Great Britain) - 1898
...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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The Chemical News and Journal of Industrial Science; with which is ..., Band 78

1898
...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 be 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

Andrew Alexander Blair - 1901 - 309 Seiten
...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 - 67 Seiten
...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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Bulletin, Ausgaben 319-324

1908
...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 be 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 School of Mines Quarterly, Band 25

1904
...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 - 137 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 - 580 Seiten
...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 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 Modern Asphalt Pavement

Clifford Richardson - 1905 - 580 Seiten
...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 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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Technical Methods of Ore Analysis

Albert Howard Low - 1905 - 273 Seiten
...3o-gram weighed platinum crucible having a tightly fitting cover. Heat over the full flame of a Bu risen burner for seven minutes. The crucible should be supported on a platinum or pipe-stem triangle with the bottom 6 to 8 cm. above the top of the burner. The flame should be fully...
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