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Books Bücher 31 - 40 von 56 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 to 30 grams and having a tightly fitting cover. Heat over the full flame of a Bunsen burner for seven minutes. "
Bulletin - Seite 38
1908
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Laboratory Manual of Bituminous Materials for the Use of Students in Highway ...

Prévost Hubbard - 1916 - 153 Seiten
...29. The crucible should be supported on a platinum or nichrome triangle with the bottom from 6 to 8 centimeters above the top of the burner. The flame should be fully 20 centimeters high when burning freely, and the determination should be made in a place free from drafts. The upper , f , , iij i_...
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Engineering Chemistry: A Manual of Quantitative Chemical Analysis for the ...

Thomas Bliss Stillman, Albert Leeds Stillman - 1916 - 760 Seiten
...shown in Fig. 15. The crucible should be supported on a platinum triangle with the bottom from 6 to 8 centimeters above the top of the burner. The flame should be fully 20 centimeters high when burning freely, and the determination should be made in a place free from drafts. The upper surface of the...
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Bulletin of the U.S. Department of Agriculture, Ausgaben 301-325

1917
...shown in figure 15. The crucible should be supported on a platinum triangle with the bottom from 6 to 8 centimeters above the top of the burner. The flame should be fully 20 centimeters high when burning freely, and the determination should be made in a place free from drafts. The upper surface of the...
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Gas and Fuel Analysis for Engineers: A Compend for Those Interested in the ...

Augustus Herman Gill - 1917 - 145 Seiten
...by the watch. The crucible should be supported on a platinum triangle with the bottom six to eight centimeters above the top of the burner. The flame should be fully twenty centimeters high when burning free, and the determination should be made in a place free from...
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Coal and Its Scientific Uses

William Arthur Bone - 1918 - 491 Seiten
...triangle with the bottom 6 to 8 c.ms. above the top of the burner. The flame should be fully 20 c.ms. high when burning free, and the determination should...The upper surface of the cover should burn clear but the under surface should remain covered with carbon. To find the Volatile Combustible Matter, subtract...
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Coal and Its Scientific Uses

William Arthur Bone - 1918 - 491 Seiten
...Sc.ms. above the top of the burner. The flame should be fully 20 c.ms. high when burning free, and 56 the determination should be made in a place free from...The upper surface of the cover should burn clear but the under surface should remain covered with carbon. To find the Volatile Combustible Matter, subtract...
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Coal and Its Scientific Uses

William Arthur Bone - 1918 - 491 Seiten
...for 7 minutes. The crucible should be supported on a platinum triangle with the bottom 6 to 8 c.ms. above the top of the burner. The flame should be fully 20 c.ms. high when burning free, and the determination should be made in a place free from draughts. The...
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Waterproofing Engineering for Engineers, Architects, Builders, Roofers and ...

Joseph Ross - 1919 - 442 Seiten
...products have been burnt off. The crucible is 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 should be made in a place free from drafts. The upper...
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American Highway Engineers' Handbook

Arthur Horace Blanchard - 1919 - 1658 Seiten
...in Fig. 44. 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 freely, and the determination should be made in a place free from drafts. The...
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Waterproofing Engineering for Engineers, Architects, Builders, Roofers and ...

Joseph Ross - 1919 - 442 Seiten
...products have been burnt off. The crucible is 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 should be made in a place free from drafts. . The...
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