Tässä esim siis vuotamattoman täytön vaatimus:
Member States shall ensure that refillable electronic cigarettes and refill containersare only placed on the market if the mechanism by which the electronic cigarettes arerefilled complies with one of the following conditions:
(a) it entails the use of a refill container possessing a non-detachable nozzle atleast 1cm long, which is narrower than and slots comfortably into the openingof the tank of the electronic cigarette with which it is used and possessing aflow control mechanism that emits no more than 20 drops of refill liquid perminute when placed vertically;
(b) it operates by means of a docking system which only releases refill liquidswhen the electronic cigarette and refill container are connected.