how it works like this, and a good host you will not regret the five minutes to produce such a device. At the depot you can put any thick-walled bottle. You will also need the rubber tube and a metal or glass tube of length 10— 12 cm and an inner diameter of about 3 mm. Fill with water a vessel to about half and stir in the soda at the rate of 4 teaspoons per Cup. Before you plug the bottle with a rubber stopper with her passed through the tube, hang it on the inside string pouch with citric acid so that it does not touch the water. The fire extinguisher ready. You are armed against micropora. Is to turn the vessel, as, from the tube will begin to break the foam jet of water.
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