Philips Respironics EverFlo 5L Oxygen Concentrator.
This oxygen generator has many advantages that set it apart from all other concentrators. Here are just a few of them:
The quietest concentrator in the world: noise level <45 dBA Oxygen output maximum concentration: 93+/-3% The most reliable – can work day and night without interruption Oxygen purity indication Operating time up to 40 000 hours Maximum number of protections and alarms in case of emergency situations – power failure, low oxygen level, clogged filters, etc. Very robust and reliable design Very easy to set up and operate Low power consumption etc.