7-Stage PWRO7100PM Household Reverse Osmosis Unit by Purewave is a complete and reliable water filtration system that is installed under the kitchen countertop. It features an 11-liter storage tank and seven filtration stages for effective removal of impurities from tap water.

The seven filtration stages include:

• 1st stage: PWPR5M sediment filter that removes dirt and sediments. Replace every six months.
• 2nd stage: PDCBL granular activated carbon filter that removes 99% of free chlorine and organic contaminants. Replace every six months.
• 3rd stage: PDCBL-S solid activated carbon filter that filters down to 0.6 microns. Replace every six months.
• 4th stage: VONTRON 100GPD TFC membrane that separates 95-99.9% of impurities. Replace every thirty-six months.
• 5th stage: AICRO post-treatment carbon filter that improves the pH and taste of the water. Replace every twelve months.
• 6th stage: AIMRO enrichment filter that adds trace elements to the water. Replace every twelve months.
• 7th stage: AIFIR-200-ML alkaline ion filter that enriches the water with natural minerals. Replace every twelve months.

The 11-liter storage tank with an elastic diaphragm provides pressure so that water is pushed out when the faucet is opened. The outlet faucet is installed on the countertop or sink.

All filtration materials are certified to the strictest standards (NSF, FDA, ISO) for safe use and maximizing water quality.