Unfortunately, the plastic bottles tolerate boiling not quite as good, and at a price of just over 4 euros I have but then considered that this vaporizer might be worth.
Conclusion: Super device! Simple, fast, it goes much pure (also the wide-mouth bottles of Nuk, which I prefer), the unit needs only 90 ml of water and when it is finished, it will switch off easy. One needs to take care of anything, it boils nothing about, and the plastic stuff keep longer as simple and appetizing look out!
Despite the 40, - Euro: An absolute must for every baby budget!