3 stationary oxygen concentrators EverFlo are offered by Philips Respironics for patients with prescribed oxygen therapy with a flow rate of up to 5 l/min.    Ambient conditions: & nbsp;Temperature 13°C to 32°C (operation) / Operating height 0 to 2,286 m Flow: & nbsp;0.5 – 5 liters per min Oxygen concentration: 87–96 % Noise level: 40 dBA or lower (device) /60 dBA and higher (alarm) Weight: 14-15 kg Dimensions (HxWxD): 580 x 380 x 240 mm SAP (oxygen percentage indicator) Oxygen low: 82% Oxygen alert level very low: < 70 % Power supply: nbsp; 230 V / 50 Hz Power consumption: < 300 W   Year 2020 CE-Identifier is available on all devices.   The oxygen concentrators were purchased during the Coronapandemic. They are still original-packed and unused. All devices are fully functional, but there is no current MPG test. The new price for these devices is between 600 and 900 € per device.    The oxygen concentrators are auctioned only as a complete box package. A suitable transport possibility must be brought with the buyer. The buyer is solely responsible for loading/pick-up.    Appointments for the visit are to be agreed at the fire brigade in Cologne, Mr. Itschert, tel.: 0221-9748-21201.