Presenting 100% Make In India Vishudh Oxygen Concentrator. Machine provides purity upto 90%-95% at 10 LPM Flow Rates. Robust body. 24x7 Available. USA Based Molecular Sieve. IIT Kanpur Technology- Inovated by medical experts to serve India. Easy to operate. Vibration and noise free silent model. Machine can give consistant flow rates and constant purity. Unlike chinese machines which drops purity at higher flow rates.