Imperial filters AMB & GF — Monderma gravity filtration system
Imperial® AMB and GF filters – The new generation of Monderma gravity filtration. Arrival from the United States at the end of October 2026.
Manufactured in the United States, Imperial® filters combine a plastic envelope microporous ceramic impregnated with colloidal silver to internal filter media selected for their adsorption capacity. Depending on the version, the water passes through a block of compressed activated carbon or a mixture of granular activated carbon and zeolite.
Why choose Imperial® filters?
- 🇺🇸 Made in America
- 🔵 High-performance microporous ceramic
- 💧 Gravity-only filtration — no electricity, no hookups
- 🧪 Contaminant reduction according to NSF/ANSI protocols 42 and 53
- 🛡️ Protection against fine particles, sediment and microplastics
- ✨ Improved taste and odor of water
- 🔄 Cleanable ceramic surface
- 📅 Battery life up to 12 months with two filters
Two technologies, two usage profiles
🔵 Imperial AMB® — Double barrier, in-depth filtration
Imperial AMB® combines a 10mm microporous ceramic shell impregnated with colloidal silver with a core of 20 mm high density compressed activated carbon and zeolite. This architecture creates a double barrier of protection : the ceramic first filters particles and protects the carbon block from sediments, then the carbon provides thorough adsorption.
Compact format: 7 inches high × 2.75 inches in diameter. According to our comparative measurements, the ceramic shell is ~30% thicker than that of the Coldstream FTO+ and the carbon block ~40% thicker than the wall of a Black Berkey®.
- Two microporous barriers crossed successively
- Dense carbon block — optimized contact time
- Carbon protection by ceramic
- Performance tested NSF/ANSI 42 and 53
- NSF compliance on materials
Comparisons based on actual measurements — slight variations possible depending on manufacturing tolerances.
🟢 Imperial GF® — Ceramic, granular carbon and zeolite
Imperial GF® combines a shell made of 10mm microporous ceramic impregnated with colloidal silver with an internal blend of granular activated carbon and natural zeolite. Water passes through the ceramic then comes into contact with the internal media: the carbon adsorbs chemical contaminants, the zeolite completes by ionic exchange.
Excellent compromise between efficiency, versatility and flow rate — ideal for comfortable daily use.
- 10 mm microporous ceramic
- Granular activated carbon + natural zeolite
- Optimized flow rate — faster flow than a compressed carbon block
- Great versatility against contaminants
- Performance analyzed by NSF/ANSI 42 and 53
- New generation alternative to Coldstream FTO+ filters
Imperial AMB® or Imperial GF®: which filter to choose?
| Criterion | Imperial AMB® | Imperial GF® |
|---|---|---|
| Internal technology | Carbon block compressed + zeolite | Granular carbon + zeolite |
| Filtration barriers | Double (ceramic + dense carbon) | Single (ceramic + internal media) |
| Flow rate | Slower — deep filtration | More fast — daily use |
| Ideal profile | Maximum filtration, variable water quality | Daily comfort, good quality water |
| Protocols tested | NSF/ANSI 42 & 53 | NSF/ANSI 42 & 53 |
Designed for gravity systems Monderma
Associated with Monderma Water Filters stainless steel tanks, Imperial filters make it possible to produce filtered water completely autonomously: without electricity, without connection, without pump, without network pressure, without water discharge. Simply fill the upper tank — water passes through the filters by gravity and collects in the lower tank, ready for consumption.
Compatibility
Thanks to their standard 2.75-inch Imperial size, AMB and GF filters are compatible with many gravity systems: Monderma Water Filters, Berkey®, British Berkefeld®, Phoenix®, ProOne® and other 2.75-inch compatible fountains.
Economic, durable and hassle-free filtration
American manufacturing, cleanable ceramic, battery life up to 12 months with two elements — Imperial® filters are a practical and sustainable solution to reduce plastic bottles and produce daily filtered water at home.
Discover Imperial filters AMB® and Imperial GF® from September 2026.
