Macroporous Weak Basic
Polystyrene Anion Exchange Resin


D301 is a macroporous weakly basic styrene-based anion exchange resin. With its uniform and solid structure and low swelling rate after ionic state transition, it performs with strong resistance to osmotic shock. And organic macromolecules are ready to be released due to its good adsorption properties. Therefore, it is widely applied to demineralization system to protect strong basic anion exchange resin from being polluted by organics and is also used in sugar refining and de-colorization.

Matrix: Styrene-divinylbenzene copolymer
Functional groups: -N+(CH3)2
Physical form: Offwhite opaque spherical beads
Moisture holding capacity(%): 50 to 60%
Ionic form as shipped: Free base form
Total mass exchange capacity: ≥4.8mmol/g
Total bulk exchange capacity: ≥1.4mmol/mL
Moisture true density: 1.03~1.06g/mL
Moisture bulk density: 0.65~0.72g/mL
Effective particle size: 0.40~0.70mm
Particle size: 0.315~1.25mm
Uniformity coefficient: ≤1.6
Integrated beads ratio after grinding test: ≥90℅
Max swelling rate of resin after ionic state transition: NH3– ->Cl : 20%
Maximum operating temperature: 100°C
Minimum bed depth: 700mm
Service flow rate: 5~40 BV*/h
Maximum service velocity: 60 m/h
Regenerant: NaOH Na2CO3   NH3H2O
Level(Counted by100%) 50-110g/L 60-140g/L 40~100g/L
Concentration: 2~4℅ 2~4℅2~4℅
Flow rate: 2~8 BV*/h 4~8 BV*/h2~8 BV*/h
Minimum contact time: 30min
Slow rinse: 5 BV at regeneration flow rate
Fast rinse: 10 BV at service flow rate
*1 BV(Bed Volume)= 1 solution per resin