The Aqua Pure APROF 7400 reverse osmosis system features seven filtration stages to treat water. The VONTRON TFC membrane separates out 95–99.9% of dissolved contaminants, chemicals, solids, metals, bacteria and microbes, while the subsequent filters enrich the water with mineral salts and trace elements.

The stages include a polypropylene sediment filter, granular and block activated carbon filters, a reverse osmosis membrane, a post-treatment carbon filter and two enrichment filters. The system reduces a broad range of substances and contaminants by up to 97%, while the post-treatment filters improve the taste and odour of the water.

• Filtration stages: 7
• Membrane: VONTRON TFC (Thin Film Composite), 400 GPD
• Contaminant reduction: Up to 97% for the substances and contaminants listed
• Membrane separation: 95–99.9% of dissolved contaminants, chemicals, solids, metals, bacteria and microbes
• Water production: 1,500 litres per 24 hours
• Pump: Included
• 1st-stage filter: Sediment filter made from 100% pure polypropylene fibres
• 2nd-stage filter: Granular activated carbon
• 3rd-stage filter: Block activated carbon, removing cysts down to 0.5 microns
• 5th-stage filter: AICRO-L-AQ post-treatment carbon filter, NSF-approved
• 6th-stage filter: AIMRO trace element enrichment filter
• 7th-stage filter: AIFIR-200, for enrichment with calcium, magnesium, sodium, potassium, selenium and other trace elements
• Water enrichment: With calcium, magnesium, potassium and sodium
• Filtration material certifications: NSF, FDA, ISO