Purolite Micro Tannin Resin

Purolite A860 is a macroporous Type I strong base anion exchange resin on an acrylic matrix, designed to adsorb soluble tannins that contribute color and taste to drinking water. Packaged in a 1/2 cubic foot box, it is engineered for water supplies with higher organic loads where fouling resistance is a top priority and where a standard gelular resin might clog more quickly.

Like its gelular sibling the A850, this resin uses an acrylic matrix to remove organic matter and to release it again during regeneration, giving reversible loading that helps keep the bed from becoming permanently fouled with organics over time. It similarly handles weaker acids and regenerates efficiently, and it can be paired with a polystyrene-based resin to broaden the range of organic compounds removed in a single treatment train.

Specifications and benefits

• Brand: Purolite (A860)
• Macroporous Type I strong base anion resin, acrylic matrix
• Adsorbs soluble tannins that cause color and taste problems
• Particularly resistant to organic fouling, even at high loadings
• Reversible organic removal with efficient regeneration
• Volume: 0.5 CF box; weight approximately 28.4 lbs each

The macroporous bead structure is the defining difference between A860 and gelular alternatives: its larger internal pore network makes the resin especially resistant to organic fouling, even where tannin and organic loadings run relatively high. That durability suits it to challenging surface waters and wells where organics are abundant and where a longer, more stable service life is valuable.

Used on its own or in combination with a polystyrene-based anion resin in a mixed-bed arrangement, this Purolite macroporous resin delivers dependable tannin and color reduction for cleaner, better-tasting water. Maintaining a regular caustic regeneration schedule restores adsorption capacity and protects the long-term performance of the bed. For installers facing heavy organic loads, A860's fouling resistance makes it a practical, long-lasting solution that keeps water clear and pleasant to drink.

When loading the bed, allow the macroporous beads to hydrate and classify properly so flow distributes evenly and contact time is maximized across the resin. For installers dealing with persistently high organic and tannin loads that would foul a lesser media, A860 delivers the rugged, long-lived performance needed to keep treated water consistently clear, fresh, and free of unwanted color and taste.