PureT (ALK-1020) 10"x2" Inline Alkaline FilterIPW Industries Inc PureT ALK 1020 10"x2" Inline Alkaline Filter Remineralization and pH balancing for reverse osmosis and filtered water systems Raises pH to 8. 5 9. 5 Adds beneficial minerals Lowers ORP oxidation potential Standard 0. 25" NPT threads The PureT ALK 1020 inline alkaline filter restores beneficial minerals and balances pH in RO treated or demineralized water. With 0. 25" NPT female threads and a compact 10" x 2" inline form factor, it