fizz keepers
... that according to Henry's Law and Dalton's Law, fizz keepers, which are claimed to pump air into bottles of fizzy drink and thereby stop them going flat, do not actually work that way?
... that according to <a class="mw-redirect" href="./Henry's_Law" id="mwBys" rel="mw:WikiLink" title="Henry's Law">Henry's Law</a> and <a class="mw-redirect" href="./Dalton's_Law" id="mwByw" rel="mw:WikiLink" title="Dalton's Law">Dalton's Law</a>, <b id="mwBy0"><a class="mw-redirect" href="./Fizz_keeper" id="mwBy4" rel="mw:WikiLink" title="Fizz keeper">fizz keepers</a></b>, which are claimed to pump air into bottles of <a href="./Carbonation" id="mwBy8" rel="mw:WikiLink" title="Carbonation">fizzy drink</a> and thereby stop them going flat, do not actually work that way?