 | Charles Henry White - Metallurgical analysis - 1915 - 374 pages
...cover. Heat over the full flame of the Bunsen * US Bureau of Mines, Technical Paper 8. burner seven minutes. The crucible should be supported on a platinum...6 to 8 cm. above the top of the burner. The flame should be 20 cms. high, when burning free, and should be protected from draughts. The carbon which... | |
 | Arthur Horace Blanchard - Highway engineering - 1915 - 540 pages
...of a pair of tongs until the most volatile products shall have been burned off. The crucible shall be supported on a platinum triangle with the bottom 6 to 8 cm. (2.362 to 3.150 inches) above the top of the burner. The flame shall be fully 20 cm. (7.874 inches)... | |
 | Thomas J. Foster - Coal mines and mining - 1916 - 1230 pages
...to 30 g., and having a tightly fitting cover. Heat over the lull flame of a Bunsen burner for 7 min. The crucible should be supported on a platinum triangle...bottom 6 to 8 cm. above the top of the burner. The name used should be fully 20 cm. high when burning free, and the determination made in a place free... | |
 | Thomas Bliss Stillman - Analytical chemistry - 1916 - 790 pages
...cover. It is then heated for 7 minutes over the full flame of a Bunsen burner, as 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... | |
 | Thomas Radford Agg - Pavements - 1916 - 450 pages
...having a tightly fitting cover. It is then heated for 7 min. over the full flame of a Bunsen burner. The crucible should be supported on a platinum triangle with the bottom of the crucible from 6 to 8 cm. above the top of the burner. The flame should be fully 20 cm. high... | |
 | Augustus Herman Gill - Calorimeters - 1917 - 174 pages
...Combustible Matter and Coke.*§— Place one gram of fresh, undried powdered coal in a platinum crucible having a tightly fitting cover. Heat over the full flame of a Bunsen burner for seven minutes by the watch. The crucible should be supported on a platinum triangle with the bottom... | |
 | Agriculture - 1917 - 988 pages
...It is then heated for seven minutes over the full flame of a Bunsen burner, as 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... | |
 | William A. Bone - Coal - 1918 - 554 pages
...recognition. " Place, i gram of fresh, undried, powdered coal in a platinum crucible, weighing 20 to 30 grams, and having a tightly fitting cover. Heat over the...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... | |
 | William A. Bone - Coal - 1918 - 560 pages
...recognition. " Place, i gram of fresh, undried, powdered coal in a platinum crucible, weighing 20 to 30 grams, and having a tightly fitting cover. Heat over the...supported on a platinum triangle with the bottom 6 to Sc.ms. above the top of the burner. The flame should be fully 20 c.ms. high when burning free, and... | |
 | Andrew Campbell - Petroleum - 1918 - 364 pages
...grammes. provided with 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—8 cm. above the top of a |-inch burner, the flame of which when burning free should be fully 20... | |
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Place 1 gram of pure bitumen 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 the bottom 6... 
