Updated on January 11, 2024


Created on May 27, 2016



A silver-enhanced ceramic water filter for household drinking water treatment.

Developed By
  1. Asopafin
Tested By
  • Universidad de Boyacá
  • Universidad Santiago de Cali
Content Partners


Product Description

The Arcifiltro is a silver enhanced ceramic ‘pot’ water filter for household drinking water treatment. This product is manufactured in Colombia with the help of OXFAM GB and Crediservir Foundation. It is an open source technology promoted by Potters for Peace.

Target SDGs

SDG 6: Clean Water and Sanitation

SDG 3: Good Health and Well-Being

Market Suggested Retail Price


Target Users (Target Impact Group)


Distributors / Implementing Organizations

Local partners: CruzRojaColombiana, Fundación Bavaria, Oxfam GB.

Manufacturing/Building Method

Locally sourced clay and sawdust are processed then mixed with water, pressed into the filter shape, fired to a ceramic state, flow rate tested to ensure production consistency and coated with silver nanoparticles.

Intellectural Property Type


User Provision Model

Non-governmental organizations and individual sales

Distributions to Date Status

~30,000 units as of August 2016

Type of filter

Ceramic pot filter

Primary material of construction

Filters are manufactured with clay, sawdust and silver nanoparticles.


There is a potential for silver in filtered water, below secondary guideline values of 0.1 mg/L.

Manufacturer-specified flow rate (L/hr)

2 L/hr when full

Bacteria reduction

>2 Log

Virus reduction


Protozoa reduction


Heavy metals and/or arsenic reduction


Maximum recommended influent turbidity level (NTU)


Effluent turbidity levels (NTU)

98-99% turbidity removal

Maintenance schedule

Scrub filter when flow rate slows.

Manufacturer-specified lifetime volume (L)

18,000 – 22,000 L

Safe water storage integration

Not available

Design Specifications

The product filters water through micropores of size 0.2 microns not allowing bacteria to pass. The filter is then bathed in colloidal silver that prevents the reproduction of microorganisms trapped in the filter. Specifications Diameter: 32 cm, Height: 25 cm height, Dirty water volume: 10 L; Flow rate: 2 L/hr when full. The product comes in 2 different external presentations in plastic or clay.

Product Schematics

Technical Support

Instructions for use: To rejuvenate flow rate when filters clog, users scrub ceramic filtering element with a brush.

Replacement Components

Available in country: tap for dispensing water, safe storage container, ceramic filtering element.


~2 years

Manufacturer Specified Performance Parameters

>2 log bacteria reduction, 2 L/hr flow rate.

Vetted Performance Status

Comparative 14 month laboratory evaluation: Long-term evaluation of the performance of four point-of-use water filters.


Clean the filter regularly for longer life

Complementary Technical Systems

Pre-filter or settle very turbid water (>5 NTU).

Academic Research and References

Comparative 14 month laboratory evaluation: Long-term evaluation of the performance of four point-of-use water filters.

“Long-term evaluation of the performance of four point-of-use water filters,” CABI Databases. Available: https://www.cabidigitallibrary.org/doi/full/10.5555/20163175339

“Colombian Red Cross – This is the new site of the Colombian Red Cross,” Cruzrojacolombiana.org . Available: https://www.cruzrojacolombiana.org/

“The Bavaria Foundation is committed,” Bavaria , 01-Sep-2017. Available: https://www.bavaria.co/fundacion/conoce-fundacion-bavaria

“Oxfam GB,” Oxfam GB. Available: https://www.oxfam.org.uk/

“Goal 6,” Sdgs.un.org. Available: https://sdgs.un.org/goals/goal6

“- Especificaciones,” Arcifiltro.es.tl. Available: https://arcifiltro.es.tl/Especificaciones.htm

“- Instruciones de Uso,” Arcifiltro.es.tl. Available: https://arcifiltro.es.tl/Instruciones-de-Uso.htm

“www.usc.edu.co – Santiago de Cali University,” Edu.co. Available: https://www.usc.edu.co/

“University of Boyacá, ” Edu.co. Available: https://www.uniboyaca.edu.co/es

A. P. Paez, “asopafin 5,” 11-Mar-2013. Available: https://www.youtube.com/watch?v=OFH2_egrIR4


Compliance with regulations


Evaluation methods

Laboratory & field evaluations

Other Information

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