... the fresh air thereafter.Construction:This machine is made up of generator, quartz tube, stainless steel cover and 60L air compressure. ... design, the machine is durable. What’s more, all dielectric parts, connectors and tubes are antioxidant , thus, the machine working life ... 30-80 80-120M 2 180 Source Oxygen source (Oxygen generator / bottled oxygen) or clean dry air Ozone Concentration Oxygen ...