20″ × 4.5″ Mixed‑Bed Deionization Cartridge

Brand: Pentek / Pentair

Type: Mixed‑Bed Ion‑Exchange Cartridge (DI / Deionization)

Size / Format: 20″ length × 4.5″ outer diameter (≈ 508 mm × 114 mm) — “Big Blue 20×4.5”

✔ General Specifications

• Filter Media: Mixed‑bed ion‑exchange resins (cation + anion)
• Intended Use: Production of deionized / ultra‑pure water for laboratory, industrial, or specialty uses
• Typical Final Water Quality: High purity / very low total dissolved solids (TDS)

✔ Physical Dimensions & Capacity

• Dimensions: 20″ (length) × 4.5″ Ø
• Resin Capacity: High‑capacity resin bed — suitable for larger volume or frequent usage systems
• Compatible System: Standard 20″ × 4.5″ housings / “Big Blue” filter housings

✔ Typical Applications

• Laboratory water purification (instrument cleaning, sample prep, etc.)
• Industrial / manufacturing processes requiring low‑TDS water (electronics, cosmetics, steam, humidity control)
• Water treatment where deionized / ultra‑pure water is needed (tanks, boilers, reverse‑osmosis pre/post treatment)
• Any setup where a full “mixed‑bed” DI cartridge is preferred for maximum ion‑removal

✅ Advantages & Features

• Mixed‑bed resin gives superior deionization performance compared to single‑bed cartridges
• Large volume capacity and high resin bed surface area — suited for heavy use or continuous water demand
• Compatible with standard “Big Blue 20×4.5” housings — easy retrofit or replacement
• Good option for labs, workshops, or small‑scale industrial installations needing consistent water purity