OOxygen Machine 8L Standard Parameters: Atomizing Function (Nebulizer) ≤5µ more than 90% Flow Rate: 0-8L Power: 480W Sound Level: ≤45 dB Concentration: 93 ± 3% Outlet Pressure: 0.04 - 0.08 MPA Net Weight: 24Kg Gross Weight: 27Kg Net Size: L390 x W337 x H620 MM Certificates: CE; ISO13485 Guarantee: 18 Months