TheOxygen Concentrator is a device that selectively removes nitrogen to produce anoxygen-enriched product gas stream while concentrating the oxygen from a gassupply (usually ambient air). This is employed in industry and as oxygentherapy equipment in hospitals. Pressure swing absorption and membrane gasseparation are two technologies that are frequently used. This machine requires120 volt +/- 10% to get operated and the average power consumption is 350watts. It produces 93% (+/-3%) pure oxygen. It offers oxygen flow 0.5 ltrs to5.0 ltrs per minute. The weight of the unit is 14 kgs but is easy to migrate asit has wheels fixed on its base. It is easy to operate as it offers plug n playmode.