Aries Inline High-Capacity Deionization filters provide a resistivity better than 20 KΩ. Color-changing cartridges provide for easy indication distinctively changing from purple to white upon resin exhaustion, without the need for monitors or indicating lights. Available with ¼" FNPT connectors in 5 and 10" lengths. Aries Inline filters cartridges are designed for low-flow, point-of-use filtration.