Meet the man who built the world's cheapest water filter (Nirnal) at Rs 30, Potential to impact millions of lives | by Mad4india | Medium
Meet the man who built the world's cheapest water filter (Nirnal) at Rs 30, Potential to impact millions of lives | by Mad4india | Medium
![NirNal Water Filter Purity in Your Pocket Filter as You Drink (TT-Water -Bottle-Filter-1) : Amazon.in: Home & Kitchen NirNal Water Filter Purity in Your Pocket Filter as You Drink (TT-Water -Bottle-Filter-1) : Amazon.in: Home & Kitchen](https://m.media-amazon.com/images/I/51drDq-Yw7L._SL1500_.jpg)