. American journal of pharmacy. Simple Forms of Laboratory Apparatus. 259 The calcium chloride tubes are filled to one-half the height of thebulb with concentrated sulphuric acid, and the open glass tubesclosed with small glass plugs held in short sections of rubber tubing. In use, the Erlenmeyer flask is disconnected, the test-tube re-moved and about 0*5 gramme of the carbonate to be determinedweighed into the dry flask; sufficient water is then added to coverthe lower end of the capillary tube ; the test-tube is charged withabout 4 strong hydrochloric acid and carefully lowered into the
. American journal of pharmacy. Simple Forms of Laboratory Apparatus. 259 The calcium chloride tubes are filled to one-half the height of thebulb with concentrated sulphuric acid, and the open glass tubesclosed with small glass plugs held in short sections of rubber tubing. In use, the Erlenmeyer flask is disconnected, the test-tube re-moved and about 0*5 gramme of the carbonate to be determinedweighed into the dry flask; sufficient water is then added to coverthe lower end of the capillary tube ; the test-tube is charged withabout 4 strong hydrochloric acid and carefully lowered into theflask; the cork carrying the calcium chloride tubes is then placed inposition, the apparatus wiped with a dry cloth and weighed. Re-move the plug a and incline the apparatus so that a portion of thehydrochloric acid can escape from the test-tube and act upon the .^. ^--^ ---^ -i--<^
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Keywords: ., bookcentury1800, bookdecade182, booksubjectpharmacy, bookyear1829
