FizzKeeper prevents flat soda drinks

yea wouldnt be the same as putting the cap on?

gostaria de saber representante para mim ver os produtos..... grata francine mail. kazahouseware@hotmail.com tel 0(xx)35-34221960

Dustin, the article you link to plainly states that although the final concentration of CO2 in the soda is not affected by the Fizz-Keeper, the RATE at which the CO2 is lost is decreased.

To me, that means it's working.

Muy señores nuestros:

Agradeceria me indicaran si tienen algun distribuidor en España donde pueda comprar este tapón como material promocional para la empresa donde trabajo.

Atentamente.

Montserrat Coll
Dpto. Marketing.

These don't work. Period. They've been around for twenty years (patent filed in 1986, given in 1988), and all they do is increase the pressure of ambient air in the bottle. There is plenty of empty space between the oxygen and nitrogen molecules for CO2 to escape from the soda, no matter how much air pressure exists above the liquid. Gas molecules are so far apart from each other, that they hardly touch to begin with. Increasing the pressure of oxygen and nitrogen doesn't reduce the available pressure that CO2 can exert.

Yes, the bottle will hiss nicely when you open it. Of course it will, you pumped air into it, and the soda continued to outgas more CO2. :)

For more (too much?) detail, check this article: http://www.chemistry.org/portal/a/c/s/1/acsdisplay.html?DOC=%5Ceducation%5Ccurriculum%5Cchemmatters%5Cfizz_0202.html