Filtration Group Corporation, a provider of filtration solutions, and Porex Corporation, a developer, manufacturer and distributor of porous polymer products, formed an agreement whereby Filtration Group will purchase Porex from Los Angeles-based investment firm Aurora Capital Group. Filtration Group is owned by Chicago-based Madison Capital Partners. The combined company will have a portfolio of products and technologies that serve a diverse range of end markets, including the food and beverage, healthcare, industrial, mining, micro-electronics, consumer, water and energy industries. Filtration Group is a developer, designer and manufacturer of liquid, air and fluid filtration solutions since 1942.