. Official and provisional methods of analysis. aratus. Draw out at one end a combustion tube of Jena glass (60 or 70 cm in length cm in diameter) and bend it down. At about 30 cm from the bend fuse onto thecombustion tube a side tube of the same kind of glass, having an internal diameterof 6 to 7 mm. Such a joint is made without special difficulty by a skilled section of the main tube designated in fig. 1 as AD is from 30 to 40 cm, depend-ing on the number of boats to be used and the amount of substance to be burnt. Aconvenient length for DB is 30 cm. This allows a lit
. Official and provisional methods of analysis. aratus. Draw out at one end a combustion tube of Jena glass (60 or 70 cm in length cm in diameter) and bend it down. At about 30 cm from the bend fuse onto thecombustion tube a side tube of the same kind of glass, having an internal diameterof 6 to 7 mm. Such a joint is made without special difficulty by a skilled section of the main tube designated in fig. 1 as AD is from 30 to 40 cm, depend-ing on the number of boats to be used and the amount of substance to be burnt. Aconvenient length for DB is 30 cm. This allows a little play at the end of the fur-nace, marked in the figure by the line HH. The lateral tube rises vertically about3 or 4 cm so as to clear the furnace, and h then bent approximately at right anglesso as to rest on the side rail of the furnace. Dress the tube in the following manner:At G place a perforated disk of platinum foil provided with a loop of platinum wireas a handle. Push into place by means of a long glass tube. A plug of asbestos may. ^ L,,XZ 0 M ?=■
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1912
