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Imperial® AMB & GF Filters — Monderma Gravity Filtration System
Imperial AMB and GF filters — The new Monderma gravity filtration range, launching 2026.
Availability estimated at the end of October 2026. For pre-orders, consult the availability information displayed on the product sheet before ordering.
Made in the United States, Imperial filters combine a plastic envelope microporous ceramic impregnated with colloidal silver to internal filter media based on activated carbon and zeolite. According to the version, the water passes through a compressed activated carbon block or comes into contact with a mixture of granular activated carbon and zeolite. The elements are offered in packs of two or four for compatible gravity fountains, used with cold drinking water from the network.
Why choose Imperial filters?
- 🇺🇸 American manufacturing of filter elements.
- 🔵 Ceramic envelope of 10 mm thickness indicative on AMB and GF versions.
- 💧 Gravity-only operation — no electricity, no pump, and no plumbing connection.
- 🧪 Manufacturer's test report mentioning NSF standards 42 and 53, available for consultation.
- 🛡️ Exterior ceramic placed upstream of internal media.
- ✨ Two constructions to choose from: activated carbon in block or granules, combined with zeolite.
- 🔄 Ceramic surface can be cleaned according to the instructions.
- 📅 Monderma replacement marker: 12 months maximum after commissioning of a pair, according to 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 hull in microporous ceramic with an indicative thickness of 10 mm, impregnated with colloidal silver, with a core of compressed activated carbon with an announced thickness of 20 mm, associated with zeolite.
This architecture combines two filter structures in the same element: the water first passes through the ceramic envelope, then the internal activated carbon block. The ceramic constitutes the external stage, accessible for cleaning surface deposits, while the activated carbon constitutes the internal adsorption media.
Format of each element: 7 inches tall × 2.75 inches diameter. The particularity of AMB lies in the combination of a ceramic envelope and a carbon core in the form of a block, rather than in granules.
- Exterior ceramic: 10mm indicative thickness.
- Compressed activated carbon block: 20mm thickness announced.
- Two structures crossed successively by water.
- Zeolite associated with internal media.
- Ceramic surface can be cleaned according to the instructions.
- Access to manufacturer's tests and documents, with their scope.
🟢 Imperial GF — Ceramic, granular carbon and zeolite
The Imperial GF combines a hull in microporous ceramic 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 AMB, activated carbon is used here in the form of granules, not a compressed block. The GF thus offers another ceramic and activated carbon construction within the Monderma range.
Format of each element: 7 inches tall × 2.75 inches diameter, for installation in a compatible gravity fountain.
- Microporous ceramic: 10mm indicative thickness.
- Granular activated carbon combined with natural zeolite.
- Passage of water through the ceramic, then the internal media.
- Gravity operation for daily home use.
- Ceramic surface can be cleaned according to the instructions.
- Access to manufacturer's tests and documents, with their scope.
The thicknesses and dimensions above are indicative characteristics communicated by Monderma. They are separate from laboratory test results and are not presented as NSF certified measurements.
Imperial AMB or Imperial GF: which filter to choose?
| Criterion | Imperial AMB | Imperial GF |
|---|---|---|
| Internal technology | Compressed activated carbon block + zeolite | Granular activated carbon + natural zeolite |
| Ceramic thickness | 10 mm indicative | 10 mm indicative |
| Construction of activated carbon | Compressed block, announced thickness of 20mm | Granulated media, without compressed block |
| Water route | Ceramic then activated carbon block | Ceramic then granular mixture |
| Format per element | 7 inches tall × 2.75 inches diameter | |
| Usage | Cold drinking water from the network, in a gravity fountain without pressure | |
| Maintenance | Cleanable ceramic; renewal of elements according to the instructions | |
| Monderma replacement marker | 12 months maximum after putting a pair into service, or sooner depending on the conditions of use | |
| Essays and documents | Manufacturer's file: Envirotek report mentioning NSF 42 and 53, and NSF/ANSI document 42. Dates and scope on the dedicated page. | |
The choice between AMB and GF concerns the construction of internal media. Actual flow rate depends on water level, configuration, commissioning and condition of filters. Greater thickness or slower flow alone is not sufficient to demonstrate better reduction of all contaminants.
Designed for Monderma gravity systems
Combined with Monderma Water Filters stainless steel tanks, Imperial filters work without electricity, without plumbing connection, without pump and without network pressure. Fill the upper tank with cold drinking water: the water passes through the filters by gravity and collects in the lower tank.
This operation does not produce a continuous flow of waste water. However, commissioning and cleaning require water. Check the available space in the lower tank before each filling to avoid overflowing.
See Monderma fountains equipped with Imperial filters
Compatibility
AMB and GF elements are intended for fountains Monderma Water Filters and certain Berkey®, British Berkefeld®, ProOne® gravity models and other suitable systems. Check before ordering 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 certification of the system so equipped.
Gravity filtration with cleanable ceramic
American manufacturing, cleanable ceramic and replaceable elements: the Imperial range fits into the daily use of a fountain at home. Follow the instructions for commissioning, cleaning the filters and regular maintenance of the tanks.
The Monderma replacement mark is 12 months maximum after putting a pair into service, with earlier replacement when the instructions or conditions of use require it. This is a maintenance benchmark, not a certified reduction time for each contaminant. Surface cleaning does not replace the renewal of elements.
On a system using two elements, the set of four allows you to have one pair then a replacement pair. It does not extend the life of the pair already installed. Store unused items according to the instructions.
The number of disposable bottles avoided depends on your consumption and the effective replacement of bottled water with filtered water.
New range — launch 2026: this date designates the commercial introduction under the Monderma brand, and not the date of development of the technology or performance of trials.
Directions for use
Use filters only with cold drinking water from the network, in a gravity system without pressure. They are not presented as a means of making well water, spring water or water of microbiologically unknown origin drinkable. Do not use hot water and follow the instructions of the authorities in the event of a water alert.
Discover the new Monderma Imperial AMB and GF range — estimated availability at the end of October 2026, according to pre-order information displayed.
