ALDEX Stong Base Anion Series
NSR Strong Base Anion Macroporous Nitrate Selective Resin
Tested and certified by WQA in according to NSF/ANSI/CAN 61 and NSF/ANSI 44. Aldex NSR is a macroporous, strong base anion that is highly selective for nitrates over sulfates. Aldex NSR’s unique functional group eliminates nitrate dumping at the end of the run even in the presence of high sulfates. Its resistance to nitrate dumping makes Aldex NSR a superior resin in nitrate removal applications. Further, the functional group used to manufacture Aldex NSR has shown a very high affinity for perchlorate, making this the resin of choice when designing non-regenerable, perchlorate remediation systems.
Aldex NSR Technical Bulletin: US Units (PDF)
Aldex NSR Safety Data Sheets: English (PDF) | Français (PDF)
Physical Chemical Properties
| Polymer Structure: | S-DVB resin |
| Appearance: | Opaque beads |
| Functional Group: | tributylamine quaternized |
| Ionic Form as shipped: | Chloride |
| Total Capacity, Cl form: | 0.85 to 0.95 eq/l (19.7 Kgr/ft3) |
| Moisture Content, Cl- form: | 51 to 57% |
| Mean Diameter: | 600 ± 100 μm |
| Uniformity Coefficient (max.): | 1.6 to 1.8 |
| Specific Gravity: | 1.06 to 1.08 |
| Shipping Weight (approx.): | 670 to 710 g/l (42-44 lbs/ft3) |
| Temp Limit, Cl- Form: | 100°C |
| pH limits, Stability: | 0 to 14 |
Typical Operating Conditions
| Maximum Operating Temp.: | 175°F (80°C) |
| Resin bed Depth: | 24"(600 mm) minimum |
| Recommended Service Flow: | 1 to 4 gpm/ft3 |
| Backwash Expansion: | 50 to 70% |
| Backwash Expansion Flow Rate at 77ºF(25ºC): | 1.6 to 2.5 gpm/ft2 |
| Regenerant: | NaCl |
| Regeneration level: | 8 to10 lbs/cu.ft. |
| Regenerant concentration: | 8 to 12% |
| Regeneration time: | 20 to 60 minutes |
| Slow rinse flow rate: | At regeneration flow rate |
| Fast rinse flow rate: | At service flow rate |
| Rinse Volume: Influent Limitations | 15 to 50 gal/ft3 |
| Free Chlorine: | Not traceable |
| Turbidity: | Less than 2 N.T.U |
| Iron and Heavy metals: | Less than 0.1 ppm |
Applications
Aldex NSR is often selected when chromatographic dumping of nitrates must be avoided at all costs. Due to its unique functional group, Aldex NSR will provide the highest operating capacity possible of any selective resin. Further, water processed using Aldex NSR will be able to meet EC as well as North American guidelines for potable water.
NSR Features
Very Low Color, Taste or Odor
Aldex NSR meets the requirements for paragraph 173.25 of the Food Additive Regulation of the U.S. Food and Drug Administration.
Long Life
Strong and durable beads ensure long service life.
Reliability
Aldex Chemical has over 45 years of field usage by thousands of customers demonstrates the reliability of Aldex ion exchange resins, zeolites and other water treatment media.
Pressure Drop
Fig. 1 shows the expected pressure loss per foot of bed depth as a function of flow rate at various temperatures.
Fig. 1 Pressure Drop vs Flow Rate at various degrees Fahrenheit (F°)
Backwash Characteristics
After each cycle, the resin bed should be backwashed at a rate that expands the bed 50 to 75 percent. This will remove any foreign matter and reclassify the bed. Fig. 2 shows the expansion characteristics of Aldex NSR in the chloride form.
Fig. 2 Bed Expansion vs Flow Rate at various degrees Fahrenheit (F°)
Safety Information
A material safety data sheet is available for Aldex NSR. Copies can be obtained from Aldex Chemical Co., LTD. Aldex NSR is not a hazardous product and is not WHMIS-controlled.
Caution: Acidic and basic regenerant solutions are corrosive and should be handled in a manner that will prevent eye and skin contact. Before using strong oxidizing agents in contact with ion exchange resin, consult sources knowledgeable in the handling of these materials.
These suggestions and data are based on information we believe to be reliable. They are offered in good faith. However, we do not make any guarantee or warranty. We caution against using these products in an unsafe manner or in violation of any patents. Further, we assume no liability for the consequences of such actions.