Overview brochure    Series FFU-R PDF                   Suitable filter elements: Depth filter up to 90% retention rate .       . Depth filter up to 99,9% retention rate .   . Membrane filter cartridges .       . Activated carbon / adsorption filter cartridges .       . . Stainless steel filter cartridges .     . Original-Filter cartridges from 3M .       . Brief description: The filter housings of the type FFU R34 and FFU R44 exist of fiberglass-reinforced nylon which is dyed red and take up a single filter cartridge with a length of 248 or 508 mm. The material is extremely resistant to temperature and, hence, is suited particularly to the filtration of hot water, salt solutions, alcohols, as well as organic solutions.