Ultra Pure Water ion exchange resin is mixed by cation and anion exchange resins intended for use in high purity water systems. In properly designed ultrapure water systems, polishing ion exchange resin will deliver 18 Megohm•cm quality water. This mixed bed product is particularly suitable for use in the polishing of high purity water for specialty electronics applications such as the manufacturing of disk drives, display devices, CD-ROMs, discrete semiconductor devices, lower density IC chips, or in the back-end chip dicing and mounting operations.