HONGEN 5L/min Membrane Oxygen Generator HONGEN 5L/min Membrane Oxygen Generator was a smaller capacity design of Oxygen Generator,despite the smaller capacity design it was built upon a legacy of reliable,field-proven concentrator models. HONGEN 5 Liter Oxygen Concentrator was updated with enhanced quality, durability, performance and simplicity in mind.This robust oxygen concentrator offers just the right balance of cool and quiet. The designed was specify on slim concept to reduce the space consumption of the user and bring convenience to household, clinic and hostipal usage. Specification: Technical parameters: ambient humidity: 95% RH ambient temperature:-30 ~+40 Technical parameters: operating voltage: AC220 + 20V/50Hz rated power: 50 W main engine weight: 3.1 kg working noise: 42dB(A) oxygen concentration: 90 3+ oxygen flow rate: ï½?5 (N)L/min oxygen production principle:MAS membrane air separation