Zen-O™ portable oxygen concentrator is designed to enable patients with respiratory disorders such as chronic obstructive pulmonary disease (COPD), better manage their oxygen therapy within and outside their homes.Zen-O™ weighs just 4.66 kg and can deliver up to 2 litres per minute of oxygen in either pulse or continuous flow. Zen-O™ is supplied with variety of accessories, including a carry bag and a pull cart for increased mobility.Zen-O’s practical and robust design offers greater operational efficiency and low cost of ownership for home oxygen providers. Zen-O™ is designed with a field replaceable sieve bed. The sieve bed is an important part of the device and enables Zen-O™ to produce oxygen. Overtime and depending on operating conditions the sieve bed may need to be replaced. The Zen-O™ sieve bed can be exchanged easily using simple tools in under 5 minutes, saving time and money.