The W9121214, 7-inch ATC SuperSterasyl ceramic filter candle with long mount connection can be trusted to provide high quality water. With this filters superb ability to filter 99% of contaminants, including bacteria, cysts and heavy metals, this ceramic candle is a clear choice when it comes to replacing your filter in any Doulton Gravity system. The Doulton ATC Super Sterasyl Replacement Element fits all Doulton Gravity systems. The filter uses Sintered Ceramic to remove contaminants for up to 6 months. The ceramic filter can be scrubbed clean with a brush for an extended life. Note: See owners manual for complete filter contaminant removal and specifications. 99.999% reduction of microorganisms including cysts, viruses, and pathogenic bacteria. Filter Type: Sintered Ceramic. Filter Life: 6 months or 400 gallons. Micron Rating: 0.9 microns. Flow Rate: 0.005 gallons per minute. Country of Origin: United Kingdom (GB). Contaminant Removal:. 99.99% of E. Coli. 99.99% of Shigella. 99.99% of Cholera. 99.99% of Salmonella. 99.99% of Klebsiella. 99.99% of Cryptosporidium. 99.99% of Giardia. 99.99% of Algae. 99.99% of Rust. 99.99% of Sediment. 97% of Turbidity. 100% of Guinea worm. 95% of Chlorine Taste and Odor. 94% of Lead.