Three new types of Lewabrane membrane separation elements for reverse osmosis (RO) are now available. These new products are suitable for water with strong fouling potential. The new elements were designed to generate greater turbulence in the feedwater channel, meaning that less solids accumulate on the membrane surface. They have surface areas of 37.2, 34.4 and 8.4 m2 (400, 370 and 90 ft2), and diameters of 201 mm (8 in.) or 101 mm (4 in.). All Lewabrane products feature a polyamide composite membrane, wound in several layers to form a spiral-wound element. — Lanxess AG, Leverkusen, Germany