Neo-Pure TL3 Ultrafiltration Under Sink Water Filter System Certified by WQA to NSF Standards 42 & 53 Reduces chlorine, cysts, bacteria, viruses, lead, lindane, atrazine, VOC's and MTBE 1/4 turn quick change filters, no need to shut-off the water when changing filters 0.025 Micron Hollow fiber membrane capacity: 1000 gallons or 12 months 0.5 Micron Carbon Filter Capacity: 500 gallons or 6 months