Datasheet summary
Amberlite PWA12
PDF datasheet mirror for Amberlite PWA12 (Rohm & Haas). Verify with OEM before design.
Summary
Product identification
AMBERLITE™ PWA12 Resin is a strong base anion exchange resin with unique chemical and physical properties, designed for drinking water applications. It is certified to ANSI / NSF Standard 61 for drinking water components.
Properties
- Matrix: Cross-linked copolymer
- Physical form: Transparent white beads
- Total exchange capacity: ≥ 1.25 eq/L
- Moisture holding capacity: 57 – 64 %
- Shipping weight: 720 kg/m³ (45 lb/ft³)
- Particle size:
- Screen grading: 0.3 – 1.2 mm (16 – 50 mesh US Std Screens)
- Fines content (< 0.300 mm): 2% max
Suggested Operating Conditions
- Minimum bed depth: 600 mm (24 inches)
- Typical service flow rate: 4 – 40 BV/h* (0.5 – 5 gpm/ft³)
- Regenerant (as 100 % chemical): NaCl or CO₂
- Regenerant concentration (NaCl): 6 – 12 %
- Minimum regenerant level (NaCl): 80 g/L
- Minimum contact time: 20 minutes
*1 BV (Bed Volume) = 1 m³ solution per m³ resin
The CARIX™ Process
AMBERLITE PWA12 resin, when paired with AMBERLITE PWC11 resin, is used in the CARIX™ process. This process is a partial demineralization of water using carbon dioxide as a regenerant. The CARIX™ process utilizes a mixture of a weak acid resin (AMBERLITE PWC11) and a strong base resin (AMBERLITE PWA12) for simultaneous removal of cations and anions without resin separation, and regeneration with carbon dioxide, creating no saline waste.
Commissioning and Limits of Use
AMBERLITE PWA12 resin is suitable for potable water applications after an initial commissioning rinse of 20 bed volumes of water at 25 °C. The operating capacity depends on operating conditions and feed water characteristics. The resin is certified to ANSI / NSF Standard 61 for applications with minimum flow rates greater than or equal to 2 gpm/ft³.
Hydraulic Characteristics
Pressure drop and bed expansion data are available as a function of flow rate and water temperature. Figures 1 and 2 show pressure drop data, while Figures 3 and 4 illustrate bed expansion data.
Disclaimer: This extracted summary may not include all figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.