Imperial® AMB & GF Filters — Monderma Gravity Filtration System
Imperial AMB and GF Filters — The new Monderma gravity filtration range, launching 2026.
Estimated availability: end of October 2026. For pre-orders, please check the availability information displayed on the product page before ordering.
Made in the USA, Imperial filters combine a microporous ceramic shell impregnated with colloidal silver with internal activated carbon and zeolite-based filter media. Depending on the version, water passes through a compressed activated carbon block or comes into contact with a mixture of granular activated carbon and zeolite. The elements are available in sets of two or four for compatible gravity water dispensers, used with cold potable tap water.
Why choose Imperial filters?
- 🇺🇸 American-manufactured filter elements.
- 🔵 Ceramic shell with an indicative thickness of 10 mm on AMB and GF versions.
- 💧 Operates solely by gravity — no electricity, no pump, and no plumbing connection.
- 🧪 Manufacturer's test report citing NSF 42 and 53 standards, available for consultation.
- 🛡️ External ceramic positioned upstream of internal media.
- ✨ Two constructions to choose from: block or granular activated carbon, combined with zeolite.
- 🔄 Ceramic surface cleanable according to the instructions.
- 📅 Monderma replacement guideline: maximum 12 months after putting a pair into service, depending on the conditions of use detailed below.
Two technologies, two filter constructions
🔵 Imperial AMB — Ceramic and carbon block, two successive stages
The Imperial AMB combines a microporous ceramic shell with an indicative thickness of 10 mm, impregnated with colloidal silver, with a compressed activated carbon core with a stated thickness of 20 mm, combined with zeolite.
This architecture unites two filtering structures in a single element: water first passes through the ceramic shell, then through the internal activated carbon block. The ceramic constitutes the outer stage, accessible for cleaning surface deposits, while the activated carbon constitutes the internal adsorption media.
Format of each element: 7 inches high × 2.75 inches in diameter. The uniqueness of the AMB lies in the combination of a ceramic shell and a block-form carbon core, rather than granular.
- External ceramic: 10 mm indicative thickness.
- Compressed activated carbon block: 20 mm stated thickness.
- Two structures passed through successively by the water.
- Zeolite combined with internal media.
- Ceramic surface cleanable according to the instructions.
- Access to manufacturer tests and documents, including their scope.
🟢 Imperial GF — Ceramic, granular carbon, and zeolite
The Imperial GF combines a microporous ceramic shell with an indicative thickness of 10 mm, impregnated with colloidal silver, with an internal mixture of granular activated carbon and natural zeolite.
Water passes through the ceramic and then comes into contact with the internal media. Unlike the AMB, the activated carbon here is used in granular form, not as a compressed block. The GF thus offers another ceramic and activated carbon construction within the Monderma range.
Format of each element: 7 inches high × 2.75 inches in diameter, for installation in a compatible gravity water dispenser.
- Microporous ceramic: 10 mm indicative thickness.
- Granular activated carbon combined with natural zeolite.
- Water passage through the ceramic, then the internal media.
- Gravity operation for daily home use.
- Ceramic surface cleanable according to the instructions.
- Access to manufacturer tests and documents, including their scope.
The thicknesses and dimensions above are indicative characteristics provided by Monderma. They are distinct from laboratory test results and are not presented as NSF-certified measurements.
Imperial AMB or Imperial GF: which filter to choose?
| Criteria | Imperial AMB | Imperial GF |
|---|---|---|
| Internal technology | Compressed activated carbon block + zeolite | Granular activated carbon + natural zeolite |
| Ceramic thickness | 10 mm indicative | 10 mm indicative |
| Activated carbon construction | Compressed block, stated thickness of 20 mm | Granular media, no compressed block |
| Water path | Ceramic then activated carbon block | Ceramic then granular mixture |
| Format per element | 7 inches high × 2.75 inches in diameter | |
| Usage | Cold potable tap water, in a gravity dispenser without pressure | |
| Maintenance | Cleanable ceramic; renew elements according to instructions | |
| Monderma replacement guideline | Maximum 12 months after putting a pair into service, or sooner depending on usage conditions | |
| Tests and documents | Manufacturer's file: Envirotek report citing NSF 42 and 53, and NSF/ANSI 42 document. Dates and scope on the dedicated page. | |
The choice between AMB and GF is based on the construction of the internal media. The actual flow rate depends on the water level, configuration, commissioning, and condition of the filters. Greater thickness or a slower flow rate alone is not sufficient to demonstrate better reduction of all contaminants.
Designed for Monderma gravity systems
Used with Monderma Water Filters stainless steel tanks, Imperial filters operate without electricity, without plumbing connections, without a pump, and without mains pressure. Fill the upper tank with cold potable water: the water passes through the filters by gravity and is collected in the lower tank.
This operation does not produce a continuous stream of wastewater. However, commissioning and cleaning do require water. Check the available space in the lower tank before each refill to avoid overflow.
See Monderma water dispensers equipped with Imperial filters
Compatibility
The AMB and GF elements are intended for Monderma Water Filters dispensers and certain Berkey®, British Berkefeld®, ProOne®, and other suitable gravity systems. Before ordering, verify the available height, element diameter, mounting, and space between filters. The 2.75-inch diameter alone is not enough to guarantee compatibility with an entire brand. Mounting compatibility does not constitute a certification of the system thus equipped.
Gravity filtration with cleanable ceramic
American manufacturing, cleanable ceramic, and replaceable elements: the Imperial range is designed for the daily use of a home water dispenser. Follow the instructions for commissioning, filter cleaning, and regular tank maintenance.
The Monderma replacement guideline is a maximum of 12 months after putting a pair into service, with earlier replacement required when the instructions or conditions of use demand it. This is a maintenance benchmark, not a certified reduction duration for each contaminant. Surface cleaning does not replace replacing the elements.
On a system using two elements, the set of four provides one pair and then a replacement pair. It does not extend the useful life of the pair already installed. Store unused elements according to the instructions.
The number of avoided disposable bottles depends on your consumption and the actual replacement of bottled water with filtered water.
New range — launching 2026: this date refers to the commercial introduction under the Monderma brand, not the development date of the technology or the completion of the tests.
Usage advice
Use the filters only with cold potable tap water in a gravity system without pressure. They are not intended as a means of making well, spring, or microbiologically unknown water potable. Do not use hot water and follow the instructions of authorities in the event of water alerts.
Discover the new Monderma Imperial AMB and GF range — estimated availability end of October 2026, according to the displayed pre-order information.
