ALDEX Mixed Bed Series
MB-1 (SC) High Purity Mixed Bed using Type 1 Anion
Aldex MB-1 (SC) is a highly regenerated mixed bed of a Type 1 strong base, gel anion exchange resin and a strong acid sulfonated polystyrene cation exchange resin, designed to provide ultra-high purity water. The special blend of Type 1 anion exchange resins with nuclear grade cation exchange resins ensures high resistance, low TOC extractables and excellent regenerable capacities for inorganic versus organic ions. Aldex M8-1 (SC) is provided in a 60:40 anion to cation ratio (by volume).
Aldex MB-1 (SC) Technical Bulletin: US units (PDF) | Metric (PDF) | Français (PDF)
Aldex MB-1 (SC) Safety Data Sheets: English (PDF) | Français (PDF)
Physical Chemical Properties
Polymer Structure: Cation Anion | Hydrogen form sulfonated polystyrene copolymer Hydroxyl form strong base alkyl quaternary ammonium polystyrene copolymer |
Ionic Form as Shipped: | Hydrogen / Hydroxide |
Physical Form: | Spherical beads |
Particle Size Distribution: 16 mesh (U.S. Std) 40 mesh | 2% maximum 2% maximum |
Uniformity Coefficient: | ≤1.25 |
pH Range: | 0 to 14 |
Moisture Content: | 60% maximum |
Conversion to Ionic Form: Cation - Hydrogen Anion - Hydroxide Chloride (Cl-) Carbonate CO3-2) Sulfate (SO4) | 99% minimum 95% minimum 0.1% maximum 2% maximum 0.1% maximum |
Shipping Weight: | 43 lbs per cubic foot |
Total Capacity: Cation (H form) Anion (OH form) | 1.8 eq/l 1.0 eq/l |
Recommended Operating Conditions
Effluent Quality: | Resin should provide effluent quality of approximately 5-10 megohm but is dependent on many factors |
Maximum Temperature: Regenerable Non-regenerable | 60ºC 100ºC |
Slow Rinse (Displacement) Flow Rate: | 2 to 10 US GPM per cubic foot |
MB-1 (SC) Features
Very Low Metal Content
Special manufacturing conditions ensure very low metal content.
Elemental analysis, dry basis
Iron (Fe) | <100 ppm |
Copper (Cu) | <50 ppm |
Lead (Pb) | <50 ppm |
Very Low TOC
Nonsolvent sulfonation and special manufacturing processes assure very low TOC leakage.
Uniform Particle Size
98% of all beads are in the minus 16 to plus 40 mesh range: giving a lower pressure drop while maintaining the superior kinetics of standard mesh size products.
Superior Physical Stability
90% plus sphericity and high crush strengths together with a very uniform particle size provide greater resistance to bead breakage while maintaining low pressure drop.
Safety Information
A material safety data sheet is available for Aldex MB-1 (SC). Copies can be obtained from Aldex Chemical Co., LTD. Aldex MB-1 (SC) 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.
Pressure Drop
Fig. 1 shows the expected pressure loss per foot of bed depth as a function of flow rate at various temperatures.
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 MB-1 (SC) in the chloride form.
Quality Assurance
Aldex MB-1 (SC) resin is tested by Aldex Chemical for resistivity, total organic carbon, and kinetic performance and will meet stringent UPW performance requirements on these most critical parameters. Aldex will fully support the quality and performance of Aldex MB-1 (SC) resin in UPW applications in order to assure full customer satisfaction with the product as delivered. Typical TOC and resistivity curves based on our quality control procedure for Aldex MB-1 (SC) resin are shown below (Fig. 3).