The Folia Filter is a silver nanoparticle infused antimicrobial filter for water purification.
The Folia Filter is a paper-based, copper and silver nanoparticle infused antimicrobial water filter designed to purify water from tap, tube-wells, rivers, lakes, and ponds. The funnel design of the filter allows it to accommodate existing consumer water habits. The filter is designed, manufactured, and distributed by Folia Water.
Bangladesh, with plans to expand to India and Indonesia
~0.24 USD (20 BDT)Converted on August 2020
Primary competitors in Bangladesh and future expansion markets in Southeast Asia for the target working-class consumer include water kiosk distributors including WaterHealth, ceramic water filters including EcoFiltro and Navaza, and refilled water bottles from local purification stores
Goal 6: Clean water and sanitation
Target users include rural and urban working class families in Southeast Asia with access to supermarkets and retail stores
This product is currently in the prototyping phase and as such is batch produced 100,000 units at a time at the Pilot Paper Plant facility of Western Michigan University in Kalamazoo, Michigan.
Users can obtain Folia filters from small and large scale retail stores.
Is this filter designed for individual, household, or community use?
Manufacturer-specified flow rate (L/hr)
Laboratory-evaluated log scale removal rate of bacteria
Does the system use microfiltration, ultrafiltration, nanofiltration, or reverse osmosis?
Laboratory-evaluated log scale removal rate of viruses
Laboratory-evaluated log scale removal rate of protozoa
Reduction levels of heavy metals and/or arsenic through this treatment system
Manufacturer-specified maximum level of inlet turbidity (NTU)
Range or value of outlet turbidity levels (NTU)
Description of materials of construction
Is there safe water storage integrated into this product?
What is the total number of liters that is recommended can be filtered?
The Folia Filter is a silver nanoparticle coated paper microfilm. As water passes through the filter, larger debris, dirt, and microorganisms are trapped by the small porous nature of the paper filter. Additionally, the water which passes through the filter carries silver cations that act to kill bacteria and other organisms by denaturing metabolic enzymes.
Safety precautions are provided by the manufacturer.
20 L and then needs to be replaced
The filter was designed to reduce bacteria by 99.9999%, viruses by 99.9%, protozoans by 99.99%, and iron by 99.8%.
Live bacteria testing trials performed in-house, results of testing are unknown.
No third-party testing, only testing performed by the designer.
The filter should not be stored outdoors and always kept in its protective bag until used. For an unopened bag of filters, the shelf life is 12 months. The filter should not be used when the color has changed and/or the filter itself is torn/ripped.
The filter requires a funnel to store the technology for use as well as two separate water storage containers, preferably 2 L water bottles
The product meets the expectations of the WHO with a maximum of 100 ppb of silver particles in the effluent water supply.
Live bacteria testing trials
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