Application: Stop drinking chemically treated or foul tasting water. Old filters lose efficiency—letting chlorine, heavy metals, and odors through. This upgraded 100186 replacement filter adds a pre‑filter layer to capture larger sediment and a CTC activated carbon core for superior chemical adsorption. Reduces chlorine, VOCs, bad taste, and odor better than standard carbon blocks. Restores your purifier to peak performance. Simple twist‑on installation. No tools required. For the following water purifiers: For Amway eSpring Water Purifier (all generations) For 100186 compatible systems Cross‑references: For Amway: 100186, 100185 About Package: 1 × Upgraded 100186 Water Filter Cartridge.