. absolutely neces-sary that there shall be no moisture in the Retort while the Gas is being Tubes connecting the Retort and the purifier must be occasionally washed out,as some of the fine dust of the Chemicals, which is carried over with the Gas, lodgesin the Tubes and obstructs the passage of the Gas. Failures sometimes occur from using impure Chemicals. To test them, poura small portion of the mixed Chemicals in an iron spoon, and hold it over a SpiritLamp. If the materials are not good, an explosion will occur, and a wh
. absolutely neces-sary that there shall be no moisture in the Retort while the Gas is being Tubes connecting the Retort and the purifier must be occasionally washed out,as some of the fine dust of the Chemicals, which is carried over with the Gas, lodgesin the Tubes and obstructs the passage of the Gas. Failures sometimes occur from using impure Chemicals. To test them, poura small portion of the mixed Chemicals in an iron spoon, and hold it over a SpiritLamp. If the materials are not good, an explosion will occur, and a whitish mass?with red spots will be left in the spoon ; but if they are pure, there will be noexplosion and the melted mixture will soon dry up, leaving a dark gray accommodate my customers with good Chemicals, I purchase the ingredientsdirect from the importers, warranted pure, and have them put up ready mixed, inpackages containing each one charge, making enough Oxygen for an eveningsexhibition. Price : 50 cents per package; $5 00 per dozen. ^. Oxygen Gas Bag- Purifier. TO PREPARE THE OXYGEN GAS. Retort. 18 Geo. H. Pierce, Philadelphia, Pa.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectproject, bookyear1888
