Doulton CleanSoft® Equivalent £24.70The Doulton CleanSoft® Equivalent will effectively reduce temporary hardness and limescale in your drinking water supply. ... | IDTJ Doulton Sterasyl® Equivalent £13.99The IDTJ Doulton Sterasyl® equivalent cartridge employs a high quality ceramic outer shell that is impregnated with silver to prevent the gr... | IDTJ Doulton Super Sterasyl® Equivalent £18.86The IDTJ Super Sterasyl® equivalent Cartridge will provide the same level of filtration as the IDTJ Sterasyl® equivalent cartridge but has the ad... | IDTJ Doulton Supercarb® Equivalent £21.44The IDTJ Supercarb® equivalent Cartridge will provide the same level of filtration as the IDTJ Sterasyl® equivalent cartridge but has the added c... |