Shorter life-span of RO membrane can be affected by many factors:
Unsuitable parameters of inlet water (high concentration of calcium, magnesium and iron). These basic parameters must be met by inlet water for RO systems - refer to "Required water parameters for RO systems" section.
Sediments and iron compounds clog microscopic pores of RO membrane what leads to membrane damage and shortening its life.
Another reason for premature failure of RO membrane may be timeous maintenance of equipment. Pre-filter cartridges should be replaced at least 3-6 months. Failure to conduct these measures will result in membrane damage.
Finally, inaccurate flushing procedure of carbon cartridge may result in carbon particles clogging RO membranes film.