The Purolite FerrIX-A33 ArsenX NP is a hybrid ion exchange resin engineered specifically for selective arsenic removal from drinking water, certified to NSF/ANSI 61 for municipal, commercial, and residential use. Each 1 cubic foot bag (52 lbs) delivers 0.5 to 4.0 grams arsenic removal capacity per liter with a proprietary iron oxide-impregnated bead structure that enables efficient adsorption at flow rates up to 32 bed volumes per hour.
SPECIFICATIONS
Core Performance Data
Resin Type
Hybrid Anion Exchange
Iron oxide impregnated
Arsenic Capacity
0.5 - 4.0 g/L
Depends on feed water
Contact Time
3 minutes
Optimal (2.5 - 5 min range)
Flow Rate
20 - 32 BV/h
Typical: 20 - 24 BV/h
Bead Size
0.30 - 1.20 mm
Brown spherical beads
Temperature Max
80°C (176°F)
NSF/ANSI 61 certified
TECHNICAL DETAILS
Physical & Chemical Properties
| Media Volume | 1 cubic foot (52 lbs / 23.6 kg) |
| Shipping Density | 790 - 820 g/L (43 - 51 lbs/ft³) |
| Appearance | Brown spherical beads, highly porous structure |
| Configuration Options | Lead-lag or parallel filtration arrangements |
| Backwash Requirements | Minimal backwashing, low fines generation |
| Regeneration | Optional service available through Purolite (USA only) |
| Certification | NSF/ANSI 61 certified for drinking water contact |
COMPATIBILITY & APPLICATIONS
Where This Resin Works
The Purolite FerrIX-A33 ArsenX NP is designed for point-of-entry (POE) and point-of-use (POU) arsenic removal systems in municipal water treatment plants, commercial facilities, and residential applications where arsenic contamination is present. It works in standard ion exchange tanks and can be configured in lead-lag or parallel setups for continuous operation and extended service life. This resin is particularly effective in areas with naturally occurring arsenic in groundwater or where legacy contamination requires targeted removal. The hybrid iron oxide formulation removes both arsenate (As-V) and arsenite (As-III) forms, making it suitable for variable feed water chemistry without pretreatment oxidation in most cases.
💧 Used Purolite FerrIX-A33 resin can be returned to Purolite for certified regeneration and disposal under NSF/ANSI 61 protocols (U.S. only), reducing landfill waste and ensuring compliant handling of captured arsenic compounds.
