 The method given below ls has been found to be useful by the authors. Procedure.— Place a piece of the binder and a drop of concentrated phosphoric acid in a micro 15 x 125 mm. test tube fixed in an asbestos board. Cover the mouth of the test tube with...  An Outline of Qualitative Analysis - Pagina 41door John A. Miller (Ph.D.) - 1893 - 58 pagina’sVolledige weergave - Over dit boek
 | Henry Adam Weber - 1880 - 80 pagina’s
...heat, and reddish-brown fumes of Br will be evolved, having a suffocating odor resembling chlorine. Close the mouth of the test tube with a piece of filter paper covered with moistened starch, and the starch will be colored orange-red (characteristic test). 154.... | |
 | Charles O. Curtman - 1890 - 312 pagina’s
...with an equal amount of water, into a test tube, adding a little pure granulated zinc, and covering the mouth of the test tube with a piece of filter paper, moistened with a drop of silver nitrate solution; or inserting a slip of the paper with the silver solution into a... | |
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