Pratt Industries, 6303 State Route 425 W, Henderson, KY 42420, US

Ahlstrom Filtration manufactures and distributes a variety of media for the filtration market. Its products are used in a multitude of applications, such as industrial cartridges, potable water filters, membrane substrates, pleat support, fast food, coolant and process filtration. The company manufactures a complete line of cotton fiber papers for use in chromatography, electrophoresis and blotting applications. The range of media offered by Ahlstrom Filtration includes high-purity cellulose, glass fiber media, engineered composites and nonwovens. It is a division of Ahlstrom, which is a global leader in the development, manufacture and marketing of fiber-based materials. Ahlstrom employs more than 6,500 people and is headquartered in Helsinki, Finland. Ahlstrom Filtration maintains a location in Madisonville, Ky.