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Residential
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Cartridge Filters & Housings
- Cartridge Filters - Carbon
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Cartridge Filters - Sediment
- Nelsen Pleated (Flow-Max Replacement)
- Nelsen Melt-Blown (Flow-Pro Replacement)
- Nelsen String Wound Filter Cartridges
- Pentek Pleated (Cellulose)
- Pentek Dual Gradient Polypropylene
- Pentek Pleated (Polyester)
- Pentek Spun Polypropylene Cord
- Pentek Spun Polypropylene Fiber
- SELECT SEDIMENT CARTRIDGES BY SIZE
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Cartridge Housings & Parts
- Pentek 1/4" and 3/8" connections, (Uses 2-1/2" x 9-3/4" cartridges)
- Pentek 3/4" Filter Housing, (Uses 2-1/2" x 9-3/4" size cartridges)
- Pentek 3/4" Heavy Duty Filter Housing, (Uses 2-1/2" x 20" size cartridges)
- Pentek Valve-in-Head Housings, (Uses 2-1/2" x 9-3/4" cartridges)
- Pentek Whole House (Big Blue) Housings (1" and 1-1/2" connections, uses 4-1/2" x 9-3/4" cartridges)
- Pentek Whole House (Big Blue and Big Clear) Housings (1" and 1-1/2" connections, uses 4-1/2" x 20" cartridges)
- FlowMatic Brand Mounting Brackets, Wrenches and O-Rings
- Pentek Brand Mounting Brackets, Wrenches and O-Rings
- Sand Separators & Parts
- Chlorination Systems & Supplies
- Control Valves & Parts
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Media & Resins
- Filter Support Media (Gravel or Garnet for media support base)
- Ion Exchange Resin (Water Softener, Tannin and Nitrate resins)
- Iron Removal Media (Arsenic, Birm, Katalox, Filox, Manganese Greensand, MTM, KDF 85 and Terminator Blend)
- pH Adjustment Media (Calcite and Corosex F for raising pH)
- Sediment Removal Media (Anthracite, Turbidex, Filter Ag, Filter Sand and Garnet)
- Taste, Odor & Chlorine Removal (Centaur Catalytic Carbon, Coconut Shell Carbon and KDF 55)
- Salt-free Media (FilterSorb SP3)
- Reference Manuals
- Pro Products & Supplies
- Reverse Osmosis
- Tanks
- UV Ultraviolet Disinfection
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Water Softeners
- Fleck 5600 3/4" 12-Day Timer
- Fleck 5600 3/4" Mechanical Meter
- Fleck 5600SXT 3/4" Electronic Meter
- Fleck 2510 3/4" Mechanical Meter
- Fleck 2510SXT 3/4" Electronic Meter
- Fleck 2510 3/4" Manual (Non-Electric)
- Fleck 9000 3/4" Mechanical Meter Twin Tank
- Fleck 9000 1" Mechanical Meter Twin Tank
- Fleck 9100SXT 3/4" Electronic Meter Twin Tank
- Fleck 9100SXT 1" Electronic Meter Twin Tank
- Fleck 2750 1" 12-Day Timer
- Fleck 2750 1" Mechanical Meter
- Water Test Kits
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Water Treatment Systems
- Arsenic Removal
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Carbon Taste & Odor
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Coconut Shell Carbon Filter Systems (Helps improve taste, Removes Chlorine and Odors)
- Fleck 5600 3/4" 12-Day Timer Coconut Shell Carbon Filters
- Fleck 5600SXT 3/4" Electronic Timer Coconut Shell Carbon Filters
- Fleck 2510 3/4" 12-Day Timer Coconut Shell Carbon Filters
- Fleck 2510SXT 3/4" Electronic Timer Coconut Shell Carbon Filters
- Fleck 2750 1" 12-Day Timer Coconut Shell Carbon Filters
- Centaur Carbon Systems (Helps improves taste, Removes Dissolved Hydrogen Sulfide Gas, Chlorine and Odors)
- GREEN Alternative Upflow Carbon Filters
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Coconut Shell Carbon Filter Systems (Helps improve taste, Removes Chlorine and Odors)
- Iron Removal
- Nitrate Removal
- pH Neutralizers
- Sediment Removal
- Tannin Removal
- Uranium Removal
- Pioneer Whole-House Lead, Cyst and PFOA/PFOS Removal System
- Salt Free Water Conditioners
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Cartridge Filters & Housings
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Commercial
- Brine Tanks
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Filter Cartridges
- Big Bubba Depth Cartridges
- Big Bubba Granular Activated Carbon Cartridges
- Big Bubba Pleated Cartridges
- Flow-Max Jumbo Filter Cartridges for Model 40 Single Cartridge Jumbo Housings
- Flow-Max Jumbo Filter Cartridges for Model 90 Single Cartridge Jumbo Housings
- Flow-Max Jumbo Filter Cartridges for Model 170 Single Cartridge Jumbo Housings
- Flow-Max High Temp Jumbo Filter Cartridges for Models 40, 90 and 170 Single Cartridge Jumbo Housings
- Flow-Max Pleated Filter Cartridges for all Multi-Cartridge Housings
- Filter Housings
- Filter Systems
- Fleck Parts
- Fleck Valves
- Resin Tanks
- Reverse Osmosis
- UV Disinfection
- Water Softeners
Purolite A520 Nitrate Select Resin 1/2 cubic foot Box (A520-50-BOX)
Product Description
Purolite A520 is a strong base anion exchange resin supplied in the chloride form as moist, tough, uniform spherical beads. It is especially useful in nitrate removal applications due to its ability to remove nitrates preferentially in the presence of sulfates and other divalent ions. The use of Purolite A520 eliminates nitrate dumping and retains a greater degree of its operating capacity in the presence of high levels of sulfates. (2-4 GPM SFR per cu/ft)