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We all unfortunately know backwash: the floating chunks of mystery meat you see in your buddy's drink from time to time. There's a simple solution to backwash: a mesh sieve, with slits just large enough to let water into your mouth but small enough to keep your half-eaten custard cake out of your drink.
Like a strainer for your soda. It just pops on to the top of any standard sized pop bottle, easily removed and simply cleaned with water and a shirt sleeve. Simplicity does it again.
Screen Filter: Extruded? Are you sure?
http://en.wikipedia.../wiki/Screen_filter
This wikipedia stub claims that gooey matter may become extruded through the screen into spaghetti-like strings. [rcarty, Mar 25 2007]
[link]
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Didn't your mother tell you not to drink out of the bottle? |
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Gross. A sieve wouldn't stop saliva from backwashing. Backwash is usually caused by covering the narrow opening of a container with your mouth and withdrawing the volume rapidly, which creates a great deal of suction drawing in air and saliva from your mouth. |
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The point is this: what's worse: saliva in your drink or saliva and whatever they've been eating in your drink. |
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Also, saliva, if I'm not mistaken, has a higher viscosity than water. Meaning that if the holes are small enough, the saliva will 'float' at the top of the sieve without contaminating yur drink. |
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Better to drink from those beverage squirt bags popular amongst Spanish wine drinkers. |
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