Mixed-bed Strongly Acidic
Uniform Gel Cation Exchange Resin for Ultra-pure Water Processing


7320 is a uniform and premium grade strongly acidic cation exchange resin, whose uniformity and particle size can be optimized accordingly by the operation of industrial water treatment equipment. The mixed-bed system combining 7320 with 7170 is primarily used for processing pure and ultrapure water preparations in food, biology, pharmaceuticals, electronic semiconductor, and other high-end industries. Its product performance is equivalent to IR1200NA.

Matrix: Styrene-divinylbenzene(X8DVB) copolymer
Functional groups: -HSO3
Physical form: Light claybrown transparent spherical beads
Moisture holding capacity(%): 43 to 48%(Na+) | 50 ~56%(H+)
Ionic form as shipped: Na+ form
Total mass exchange capacity: ≥4.5mmol/g
Total bulk exchange capacity: ≥2.0mmol/mL
Moisture true density:
Moisture bulk density: 0.78~0.88g/mL
Particle size: 0.50~0.80mm
Uniformity coefficient: ≤1.25
Integrated beads ratio after grinding test: ≥95℅
Ionic state transition probability: Na+ ->H+ ≤8%
Maximum operating temperature: 120°C
Minimum bed depth: 800mm
Service flow rate: 5~50 BV*/h
Maximum service velocity: 60 m/h
Regenerant: NaCl HCl H2SO4
Level(Counted by 100%): 40~240g/L 50-150g/L 80~240g/L
Concentration: 10℅ 5~8℅1~8℅
Flow rate: 2~8 BV*/h 2~5 BV*/h2~20 BV*/h
Minimum contact time: 30min
Slow rinse: 2 BV at regeneration flow rate
Fast rinse: 1~3 BV at service flow rate
*1 BV(Bed Volume)= 1 solution per resin