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subota, 20.11.2010.

particles and water-soluble

To use a water pipe, the base of the water pipe is filled with water.Tobacco is then packed into the cone piece (also known as the "bowl" or "bowl-piece") and ignited.These are usually known as "pull-stem" or "slide" in water pipes, and many glass water pipes have glass-on-glass connections fitted to be used together.As the quality of water degrades, so does the taste and smell of the water pipe's smoke.Smoke, which is produced travels through a hollow tube that is attached to the bottom of the bowl or slider.At this point the smoke fills the air chamber above the water.The smoke rises through the water in the form of bubbles, coming out cooled and filtered.Many prefer using a water pipe because the cooling effect of the water helps to reduce the chance of burning the mouth, airways, and lungs.The effectiveness of toxicant removal is related to the smoke's water contact area.The smoke travels from the stem through water or whatever liquid is preferred.The user places his/her lips inside the mouthpiece, forming a seal, and inhales creating suction through the pipe.

The water can trap some heavier particles and water-soluble molecules, preventing them from entering the smoker's airways.This "filtration" makes water pipes less damaging and healthier than many other smoking methods.It appears that water filtration can be effective in removing components from smoke that are known toxicants.Specially designed water pipes, incorporating particulate filters and gas dispersion frits would likely be most effective in this regard; the gas dispersion frit serves to break up the smoke into very fine bubbles, thereby increasing its water contact area.

The user of the water pipe covers the "carb" with a finger until enough desired smokehas collected, then uncovers and inhales the smoke (this is called "clearing" the water pipe).This causes the flame to be drawn toward the bowl piece, igniting the tobacco.At the side or back of the water pipe, above the water level, there is usually a small air hole called a "carburetor".Many higher end models have a removable bowl piece which works the same as a carb.A water pipe may be constructed from any air- and water-tight vessel by adding a bowl and stem apparatus (a slide).Not all water pipes use a carb, however.

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