AirOK Technologies, a startup incubated by IIT Madras, has developed a 'smart' air-purifier 'Vistar', which can be remotely monitored through a mobile phone. Vistar will have features like Wi-Fi and touch interface. It would cost Rs. 20,000 and last for a year, which is twice the longevity of the air purifiers currently available in the market. It comes in two models with having a metallic silver body and cylindrical shape: Vistar 450 and Vistar 550, depending on the coverage area measured in square feet. While the smaller model weighs 8kgs, the other one will be of 9.5kgs. Both the air purifiers will measure 300mm in diameter and 520mm in height. It has the ability to filter particulates up to 0.3 microns, including volatile organic compounds, acidic and basic pollutants, airborne bacteria and pet dander. It would run on AirOK's patented filter technology, Efficient Granular Absorbent Particulate Arrester (EGAPA). It can be done through the AirOk Home app and it would send notification and reminders to Smartphone when replacement is needed. The air purifier can be placed anywhere in a room, and it would be able to regulate its fan speed depending on the pollution level and concentration of pollutants. This machine, India's first indigenously made air purifier, was developed after a rigorous three-year R&D, by a team comprising Vijaya Savanth, Pavan Reddy, Prasad, Sravan Krishna and Bhanu Prasanna Varma. It was designed keeping in mind, including hospitality, real estate, food processing, and manufacturing sectors. The device has also passed the trial tests. "The positive results of the laboratory tests conducted by Shriram Institute for Industrial Research, Bengaluru and field trials by a leading specialty hospital in Chennai stand testimony" to the device’s efficiency.