R-100 replacement membranes: For machines using this type membrane, our replacement membranes are manufactured by the original NORIT manufacturer. Winemakers involved in the wine industry long enough to remember the introduction of cross-flow technology locally, will remember the NORIT brand as the original and most trusted PES membrane. Later rebranded to ‘’R-100 X-Flow’’, the manufacturer is still the world’s largest and most trusted PES crossflow membrane manufacturer. Is it therefore not comforting to know that CDS Group offers the ‘’original’’ R-100 X-Flow membranes at prices almost certainly less than any other replacement membrane? A comprehensive warranty provides further ease of mind. We purchase it in bulk through an overseas associate company, allowing us to be a price leader. X-Flow is the international membrane brand of Pentair and responsible for more than 40% of all beverages filtered by crossflow over the globe.