Polymer Group, Inc. and Midwest Filtration Co. will jointly market a new pool and spa filtration product in North America, bringing a high performance alternative media to the growing cartridge market segment. Aquapex is a pleatable 100% polyester (PET) filtration fabric that provides pool and spa owners with more balanced overall performance. In independent comparison testing, Aquapex provided enhanced efficiency and turbidity reduction. It also meets National Sanitation Foundation (NSF) Standard 50 for pools and spas. The companies plan to expand the line to include antimicrobial fabrics.