I was reading an advert for the USA version of our Ventolin Evohaler which is called Pro Air HFA and among the fascinating facts it specifically mentions ""Never immerse the canister in water to determine how full the canister is (float test) ""-obviously I have seen the float test mentioned as guide to how empty your inhaler is so I was wondering if this American advice is also pertinent to the Ventolin Evohaler ?? -are they implying the inhaler can ""leak"" inwards ??
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