Puraffinity was formed in 2015 by two Imperial international students, Henrik Hagemann from Denmark and Gabi Santosa from Indonesia. The business is a green technology company that has developed materials which remove harmful "forever" chemicals from wastewater. The company is based in the White City Innovation District, at the heart of the Imperial WestTech Corridor. 

The founders took part in several Imperial Entrepreneurship programmes, including the Venture Catalyst Challenge and WE Innovate, and the company was among the first residents of the White City Incubator.

Puraffinity is now developing an outsourced manufacturing facility in Middlesborough in the North East, which will create highly-skilled jobs in the region. In September 2024, Puraffinity completed their £17 million Series A funding round, which will enable them to scale up their manufacturing capabilities from product to market.