Mixed-bed Strongly Basic
Epigranular Anion Exchange Resin


7170 is a uniform and premium grade strongly basic anion exchange resin of type I, whose uniformity and particle size can be optimized accordingly by the operation of industrial water treatment equipment. The mixed-bed system combining 7170 with 7320 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 IRA4200CL.

Matrix: Styrene-divinylbenzene(X5DVB)
Functional groups: -N+(CH3)3
Physical form: Light yellow transparent spherical beads
Moisture holding capacity(%): 49 to 53%(Cl) | 50~55%(OH)
Ionic form as shipped: Cl form
Strong group mass exchange capacity: ≥3.5mmol/g
Total bulk exchange capacity: ≥1.35mmol/mL
Moisture true density: 1.07~1.10g/mL
Moisture bulk density: 0.67~0.73g/mL
Particle size: 0.50~0.80mm
Uniformity coefficient: ≤1.25
Integrated beads ratio after grinding test: ≥90℅
Max swelling rate of resin after ionic state transition: Cl>OH: 20%
Maximum operating temperature: 60°C
Minimum bed depth: 800mm
Service flow rate: 5~50 BV*/h
Maximum service velocity: 60 m/h
Regenerant: NaOH
Level(Counted by 100%): 40~100g/L
Concentration: 2~5℅
Flow rate: 2~8 BV*/h
Minimum contact time: 30min
Slow rinse: 2 BV at regeneration flow rate
Fast rinse: 3~6 BV at service flow rate
*1 BV(Bed Volume)= 1 solution per resin