Specifications     Type FFU-N37(N47) FFU-N39(N48)     Inlet / outlet (N1/N2) Rp 3/4"     Vent Polypropylene plug with O-ring     Housing head Polypropylene natural     Housing sump Polypropylene natural     Housing gasket Nitril (other materials optional)     Max. operat. pressure 6,9 bar     Max. operat. temperature 38°C     Confirmation DGRL 2014/68/EU I Art.4, §3 (PED)     Cartridge support DOE (both sides open) 222 (Code 3)     Cartridge length 10" (N37) I 20" (N47) 10" (N39) I 20" (N48)     Overview brochure PDF-DOWNLOAD Suitable filter elements: Depth filter up to 90% retention rate .       . Depth filter up to 99,9% retention rate .   . Membrane filter cartridges .       . Aktivated carbon / adsorption filter cartridges .       . . Stainless steel filter cartridges .     . Original-Filter cartridges from 3M .       . Brief description: The filter housings of the series FFU-N exist of Polypropylene (nature) and take up a single on both sides open filter cartridge with a length of 248 mm or 508 mm. With (222) O-rings support adaptor the suitable lengths 10" or 20". A bacterial liability is excluded by the ultrasmooth surface of the Polypropylene. The material is extremely continual compared with acids free of oxidation like hydrochloric acid and sulfuric acid up to 70% of concentration, salt solutions, to liquid hydrocarbons, alcohols and concentrated lyes. Nevertheless, the main operational areas lie in the filtration of water and watered acids in the lab, the pharmaceutical one as well as electrical industry.