Felite™ FS500 is a macroporous strong base anion resin which is specially designed for the removal of nitrates from raw water. The macroporous matrix and special ion exchange group functionality imparts ideal nitrate selectivity to Felite™ FS500 making this resin particularly suitable for nitrate removal even when moderate to high concentrations of sulfate are present.

Felite™ FS500 is intended for all nitrate removal applications, and can also be used to remove perchlorate.

Felite™ FS500 is supplied in both Industrial and Potable Water Grade(When ordered as Felite™ FS500-P).

Nitrate Removal;

typical physical & chemical characteristics:

Polymer Structure

Styrene/DVB, Macroporous


Spherical Beads

Functional Group

Quaternary Ammonium

Ionic form, as shipped


Total Capacity (mmol/ml)

0.9 min. (Cl-)

Moisture Retention

50 - 56%

Particle Size Range (mm)

0.3 - 1.2

(≤0.3mm, 1% max.; >1.2mm, 5% max.)

Uniformity Coefficient (max.)


Reversible Swelling, H+ → Na+ (max.)


Shipping Weight (g/L, approx.)

675 - 705 (42 lb/ft3)

Specific Gravity


Temperature Limit

100℃ (212°F)

Stability, pH Range

0 - 14

Felite™ Resin

Felite™ FS500, Nitrate Removal Selection Resin, Macroporous

Strong Base Anion
Standard Mesh
Cl- form

WQA Gold Seal

Certified by the WQA to NSF/ANSI-61 Standard


Felite™ Resin 25L Package

25 Litres / 1 cu.ft PE Bag;
42 Bags Per Pallet;
20 Pallets Per 20’ Container

Felite™ Resin Package Pallet

1 Jumbo Bag Per Pallet;
20 Pallets Per 20’ Container

Felite™ Resin Jumbo Bag

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