201×7 is a clear gel Type 1 strong-base anion exchanger with both high operating capacity and the ability to achieve low residual silica levels. It has a clear gel structure, showing excellent regeneration efficiency and rinse characteristics.
| Items | Specification |
| Polymer Matrix Structure | Crosslinked Polystyrene Divinylbenzene |
| Physical Form and Appearance | White color Spherical beads |
| Functional Groups | [-N(CH₃)₃OH] |
| Ionic Form ,as shipped | CL- |
| Total Capacity, CL- form, wet, volumetric | ≥1.35eq/l min |
| Moisture Retention, CL-form | 42-48% |
| Particle Size Range | 0.45mm-1.25mm |
| < 0.45mm (max.) | 2% |
| Uniformity Coefficient (max.) | 1.6 |
| effective size | > 0.5mm |
| Reversible Swelling CL-→ OH–(max.) | 18-25% |
| Shipping Weight (approx.) | 670 -730g/l |
| Specific Gravity, moist CL- Form | 1.09 |
| pH Range, Stability | 0 - 14 |
| Maximum Temperature | Oh-Form | 60 °C (140°F) max. |
| CL-Form | 80 °C (176°F) max | |
| Backwash Rate | 50 to 75% Bed Expansion | |
| Regenerant Concentration | 2-4% NaOH | |
| Regenerant dosage | NaOH | NaOh volume:resin volume = 3:1 |
| Regenerant Flow Rate | 2 to 4 BV/h | |
| Regenerant contact Time | At least 40 minutes | |
| Service Flow Rate | 10-25m/h | |
It is mainly used in pure water and high purity water manufacturing, extraction and decolorization of biochemical products, wastewater treatment, separation of organics, extraction of radioelements, extracting the tungsten and molybdenum in hydrometallurgy etc