AP5K-ALK - Replacement Filter Kit for 5 Stage R/O System with Alkaline Filter

The AP5K-ALK Replacement Filter Kit from AMPAC USA keeps your 5-stage reverse osmosis system performing at its best, especially units equipped with an alkaline filter. It replaces the essential filtration components in AMPAC USA systems and other standard 5-stage RO setups that include an inline or cartridge alkaline stage, ensuring continued clean, great-tasting water along with the enhanced pH balance the alkaline stage provides.

• 5-micron sediment pre-filter captures dirt, rust, and particulate matter, protecting downstream filters
• KDF-GAC pre-filter (included in one kit variation) reduces chlorine, heavy metals, and organic chemicals
• CTO/2 carbon block pre-filter (included in the other kit variation) removes chlorine, bad tastes, and odors
• Inline alkaline filter reintroduces beneficial minerals and raises the water’s pH after reverse osmosis

The kit’s pre-filter stages prepare water for the reverse osmosis membrane by removing larger particles and chemical contaminants before purification. After the RO process, water can become slightly acidic; the inline alkaline filter corrects this by reintroducing beneficial minerals and raising the pH, improving taste while delivering water that’s both pure and balanced.

AMPAC USA manufactures the AP5K-ALK kit to precise, stringent quality standards. Filters should be changed every 6 to 12 months depending on water quality, and two kit configurations — APC5K-ALK1 and APC5K-ALK2 — let you choose the pre-filter combination that best matches your system’s requirements.