The Doulton W9120562 Ultracarb ceramic candle filter features an absolute micron rating of 0.9 microns and a nominal rating of 0.5 microns. This ultra-fine ceramic shell is engineered to mechanically filter out pathogenic bacteria, cysts (like Cryptosporidium and Giardia), sediment, rust, and turbidity, while the inner activated carbon block reduces chlorine, taste, odor, and lead from your undersink drinking water line.

The Doulton W9120562 Ultracarb cartridge has a rated filtration life of 6 months or 600 gallons, whichever comes first. Because the ceramic shell is cleanable, you can extend its effective service life by gently scrubbing the exterior under running water with a soft brush or Scotch-Brite pad when flow rate drops. However, once the 6-month mark or 600-gallon capacity is reached, the internal carbon block is depleted and the cartridge must be replaced to maintain certified contaminant reduction.

Yes. The Doulton W9120562 Ultracarb candle is tested and certified to NSF/ANSI Standard 42 for aesthetic effects (chlorine, taste, and odor reduction) and NSF/ANSI Standard 53 for health effects, including lead reduction, cyst reduction, turbidity, and VOC reduction. It also meets the requirements of BS EN ISO 9002 and is tested by the Water Research Council (WRc) for bacteriological reduction of >99.99% against E. coli, Cholera, Shigella, Salmonella typhi, and Klebsiella terrigena.

The Doulton W9120562 is a standard 10-inch Ultracarb candle with a short mount (M12 threaded stud) configuration, making it compatible with Doulton and British Berkefeld undersink systems such as the HIP, HIS, HCPS, and HCP housings, as well as Aquacera and other third-party housings designed to accept short-mount Doulton candles. Always verify that your housing accepts the short-thread mount version (not the long-thread variant) before installation.

The W9120562 Ultracarb delivers a flow rate of approximately 0.66 gallons per minute (2.5 L/min) at 60 psi, which is well-suited for single-tap undersink drinking water applications. It is rated for use with both municipally treated and non-chlorinated private well water, operating within a temperature range of 40°F to 100°F (4°C to 38°C) and a pressure range of 10–125 psi. For well water with heavy sediment, a pre-filter is recommended to prolong the ceramic shell's service life between cleanings.