- Model A503 - Demineralization - High Porosity Anion

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Purolite A503 is a macroporous poly(vinylbenzyl-trimethylammonium) exchanger with a large pore structure and exceptionally high operating capacity. It has been designed for use in the demineralization of aqueous solutions containing appreciable quantities of high-molecular weight organic materials of the fulvic or humic acid type. Its resistance to organic fouling is superior to that of the corresponding gel resins, as is its excellent resistance to osmotic and thermal shock. It has the normal thermal stability in most salt forms of the conventional Type 1 resin and good mechanical properties.

  • Application - Demineralization - High Porosity Anion
  • Polymer Structure - Macroporous polystyrene crosslinked with divinylbenzene
  • Appearance - Spherical beads
  • Functional Group - Type 1 Quaternary Ammonium
  • Ionic Form as Shipped - Cl-

  • Total Capacity (min.): 1.0 eq/l (21.8 Kgr/ft3) (Cl- form)
  • Moisture Retention: 61 - 66 % (Cl- form)
  • Particle Size Range: 300 - 1200 µm
  • <300 µm (max.): 1 %
  • Uniformity Coefficient (max.): 1.7
  • Reversible Swelling, Cl- → OH- (max.): 20 %
  • Specific Gravity: 1.08
  • Shipping Weight (approx.): 670 - 700 g/l (41.8 - 43.8 lb/ft3)
  • Temp Limit, Cl- Form: 100°C (212°F)
  • Temp Limit, OH- Form: 60°C (140°F)

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