Researchers at Indian Institute of Technology Delhi have developed a respiratory filter which not only restricts entry of up to 95 percent dust and air pollutants, but is also the cheapest naso filter available.

The device ‘Nasofilters’, a nano-respiratory filter involving a cost of Rs. 10, is ready for commercialisation and gives protection against the finest particulate pollutants in the air for at least eight hours and hence reduces the risk of respiratory diseases.

The team of innovators was recently awarded with the “National Startups Award” by President Pranab Mukherjee.

The team included IIT Delhi faculty members Manjeet Jassal and Ashwini K Agrawal, besides institute alumni Sanjeev Jain, Prateek Sharma, Tushar Vyas and a student Jatin Kewlani.

The professor explained that the project involved assembling millions of small-sized pores to create a thin flexible membrane, which could capture very small particles with high efficiency.

This allows filters to be used for long hours while maintaining good breathability and comfort. The filters aim to provide relief to common users from air pollution and to protect people, who are prone to allergies. It also safeguards those who are exposed to job related industrial particulate pollutants. This is also probably the cheapest naso filter in comparison to the face masks and other alternatives available in the market to fight critical levels of air pollution.