Introduction
ACTIVESORB-AG is a silver-impregnated coconut shell based granular activated carbon specifically designed and made for bacteriostatic properties that avoids microorganism growth inside purifiers and trace removal. It is a catalytic, high activity granular activated carbon manufactured by steam activation of selected coconut shells under rigidly controlled conditions.
The silver impregnation of carbon ACTIVESORB-AG imparts bacteriostatic properties that inhibit bacterial growth on the carbon filter media. Silver exhibits a self-sterilizing property called the oligodynamic effect that is recognized as an effective method for controlling microbial growth in drinking water application.
Removal of
Algae
Viruses
Bacteria
Yeast
Fungi
Protozoa
Features
- Antimicrobial (with bacteriostatic properties)
- Extensive internal surface
- Predominance of micropores
- Improves taste and odour of water
- Optimized density
- Maximum hardness
- Low dust and turbidity
- Excellent adsorption capacity
FREQUENTLY ASKED
QUESTIONS
ACTIVESORB-AG® is a silver-impregnated coconut-shell granular activated carbon (GAC) designed to prevent microbial growth inside filters and purifiers. It combines high-activity catalytic carbon with bacteriostatic silver, providing dual action — adsorption of contaminants and inhibition of bacteria, mold, and biofilm formation.
Silver is well known for its oligodynamic effect — the ability of small amounts of silver ions to suppress or destroy microorganisms. In ACTIVESORB-AG®, silver is bonded to the carbon surface, which prevents bacteria from colonizing the media and keeps filters hygienic even during long service periods.
- ☛ Removes chlorine, odor, color, and organic impurities
- ☛ Improves taste of water
- ☛ Prevents bacterial growth inside the filter bed
- ☛ Reduces biofilm formation in long-term use
- ☛ Rapid dechlorination and high adsorption capacity
- ☛ Ensures clean, odor-free, and microbiologically safe water
- ☛ Point-of-Entry (POE) and Point-of-Use (POU) filters
- ☛ Residential and household water purifiers
- ☛ Pharmaceutical and medical water systems
- ☛ Food & beverage processing
- ☛ Drinking water dispensers, coffee machines, and coolers
- ☛ Aquarium and laboratory polishing units
Silver ions on the carbon surface interfere with microbial cell enzymes and DNA, stopping reproduction and metabolism. This bacteriostatic property:
- ☛ Prevents slime or odor inside filters
- ☛ Reduces need for chemical disinfectants
- ☛ Extends filter life and maintains water quality
| Feature | Standard GAC | ACTIVESORB-AG® |
|---|---|---|
| Base Material | Coconut shell GAC | Silver-impregnated coconut shell GAC |
| Function | Adsorption only | Adsorption + Bacteriostatic control |
| Microbial Growth | Possible in humid conditions | Inhibited by silver |
| Taste & Odor Control | Yes | Enhanced + hygienic |
| Service Life | Normal | Extended, cleaner operation |
| Iodine Adsorption | ≥ 1100 mg/g |
| CTC Activity | ≥ 55 % |
| Moisture (as packed) | ≤ 3 % |
| Total Ash | ≤ 4 % |
| Ball-Pan Hardness | ≥ 98 % |
| Silver Content | 0.01 – 0.05 % |
| Surface Area (BET) | ~ 1100 m²/g |
| Bulk Density | 630 – 640 kg/m³ |
| pH (in water) | 8.5 – 11 |
| Particle Size | 8 × 30 mesh (0.6 – 2.36 mm) |
- ☛ Bacteriostatic – prevents microorganism growth
- ☛ High surface area and rapid adsorption
- ☛ Excellent taste and odor improvement
- ☛ Low dust and low turbidity
- ☛ Hard, durable granules (98 % hardness)
- ☛ Works over a wide pH range (8.5 – 11)
- ☛ Ideal for long-life cartridge or multi-stage filters
Typical lifespan: 12–24 months in domestic use, depending on chlorine load and water quality. In continuous-flow or industrial systems, lifespan can extend up to 3 years with proper pre-filtration and periodic backwashing.
Yes. Silver is used in trace quantities (0.01–0.05 %) and is firmly bonded to the carbon surface — no leaching occurs under normal operating conditions. The product meets international safety standards for drinking-water treatment.
- ☛ Rinse before use until water runs clear.
- ☛ Maintain 25–35 % freeboard for backwashing (if in large vessels).
- ☛ Operate in down-flow configuration for best performance.
- ☛ Replace or regenerate media once adsorption or dechlorination efficiency declines.
- ☛ 25 kg (55 lb) bags
- ☛ 500 kg (1 100 lb) bulk bags
- ☛ Custom packaging available on request
Watch Water GmbH, Mannheim, Germany — a global leader in sustainable water-treatment technologies such as Catalytic Carbon®, Ferrolox®, Filtersorb®-SP3, and Titansorb®. All Watch Water adsorbers are made under strict quality control for performance, safety, and environmental responsibility.
- ☛ Bacteriostatic — silver-impregnated for hygiene
- ☛ High activity — rapid chlorine and odor removal
- ☛ Improves taste and clarity
- ☛ Long service life and stable performance
- ☛ Made from 100 % coconut-shell carbon
- ☛ Safe, durable, and environmentally friendly
Drinking Water Treatment