Ron rivera on fri 11 nov 05
Greetings
Potters for Peace trains Third World potters in the production of a low
tech ceramic water filter. In many cases we require a FOOD SAFE sealant to
apply on the inside of the terra cotta (pottery) water receptacle.
Does anyone know of a FOOD SAFE sealant that we can use.
Peace
Ron Rivera
International Ceramic Water filter Program
Potters for Peace www.potpa.org
Attached is more information and web sites on the technology.
Ivor and Olive Lewis on tue 15 nov 05
Dear Ron Rivera,
I take it that glazing these pots with a food safe glaze is out of the =
question due to cost or lack of materials.
Since you will be seeking a solution that will not deteriorate due to =
bacteria or fungi you will be limited to a Mineral solution.
My suggestion is to wash the interior of each of the water posts with a =
solution of Sodium Silicate in Well Boiled Water. Sodium Silicate =
solution has been known for several centuries. It was used by farmer's =
wives to cover Eggs in Storage for several months and worked by sealing =
the Egg Shells making them impervious, isolating the contents of the =
eggs from air and bacterial
Liquid Sodium Silicate is available in industrial quantities. Tell the =
manufacturers what you wish to do and ask them to suggest an appropriate =
Density.
Best regards,
Ivor Lewis.
Redhill,
South Australia.
=20
kamaron@IBW.COM.NI on tue 15 nov 05
Ivor
Thank you so much for the suggestion. The problem is for marketing purposes we need a Food Safe Certificacion of the prodcut we will be using that will be coming into contact with the stored water.
Peace
Ron
Here is a list of Web sites that have information about the filter program:
POTTERS FOR PEACE
http://www.potpaz.org/pfpfilters.htm
UN Brochure on Ceramic filter Technology
Publicación de la Naciones Unidas sobre el filtro
: http://www.ideassonline.org/bros_view_eng.asp?id=28 (ENGLISH)
http://www.ideassonline.org/pdf/br_28_59.pdf (SPANISH)
http://www.who.int/household_water/en/
USAID REPORT on the Ceramic Water filter (Danielle Latange,CDC):
Informe financiado por USAID sobre el filtro
www.edc-cu.org/pdf/report1-final.pdf
INTERNATIONAL DEVELOPMENT ENTERPRISES :
http://www.ide-international.org/Page.asp?NavID=210
GUATEMALA (AFA GUATEMALA FITLER
www.waterfiltersforthepoor.com
PRACTICA FOUNDATION/HOLLAND Small Smart Water Solutions book
http://www.practicafoundation.nl/smartwater/csp.htm
Engineers without borders
www.edc-cu.org/filtron.htm
CAMBODIA: RECOURSE DEVELOPMENT INTERNATIONAL
http://www.rdic.org/waterceramicfiltration.htm
USDA:http://www.fas.usda.gov/excredits/gfe/Nicaragua visit 9_02.html
NICARAGUA FILTRON (in Spanish)
www.filtronnica.com
MIT :
http://web.mit.edu/watsan/img_nicaragua_ceramic.htm
THAILAND filters
http://www.burmeseyouthproject.homestead.com/burma.html
NEPAL AND INDIA filters
http://www.solutionsbenefitinglife.com/gallery.htm
Other
SWISS DEVELOPMENT AGENCY:
Poverty Alleviation as a Business
http://www.intercooperation.ch/sed/product/heierli/main.html
POTTERS FOR PEACE
http://www.potpaz.org/pfpfilters.htm
UN Brochure on Ceramic filter Technology
Publicación de la Naciones Unidas sobre el filtro
: http://www.ideassonline.org/bros_view_eng.asp?id=28 (ENGLISH)
http://www.ideassonline.org/pdf/br_28_59.pdf (SPANISH)
http://www.who.int/household_water/en/
USAID REPORT on the Ceramic Water filter (Danielle Latange,CDC):
Informe financiado por USAID sobre el filtro
www.edc-cu.org/pdf/report1-final.pdf
INTERNATIONAL DEVELOPMENT ENTERPRISES :
http://www.ide-international.org/Page.asp?NavID=210
GUATEMALA (AFA GUATEMALA FITLER
www.waterfiltersforthepoor.com
PRACTICA FOUNDATION/HOLLAND Small Smart Water Solutions book
http://www.practicafoundation.nl/smartwater/csp.htm
Engineers without borders
www.edc-cu.org/filtron.htm
CAMBODIA: RECOURSE DEVELOPMENT INTERNATIONAL
http://www.rdic.org/waterceramicfiltration.htm
USDA:http://www.fas.usda.gov/excredits/gfe/Nicaragua visit 9_02.html
NICARAGUA FILTRON (in Spanish)
www.filtronnica.com
MIT :
http://web.mit.edu/watsan/img_nicaragua_ceramic.htm
THAILAND filters
http://www.burmeseyouthproject.homestead.com/burma.html
NEPAL AND INDIA filters
http://www.solutionsbenefitinglife.com/gallery.htm
Other
SWISS DEVELOPMENT AGENCY:
Poverty Alleviation as a Business
http://www.intercooperation.ch/sed/product/heierli/main.html
On 14 Nov 2005 23:46 GMT you wrote:
> Dear Ron Rivera,
>
> I take it that glazing these pots with a food safe glaze is out of the question due to cost or lack of materials.
>
> Since you will be seeking a solution that will not deteriorate due to bacteria or fungi you will be limited to a Mineral solution.
>
> My suggestion is to wash the interior of each of the water posts with a solution of Sodium Silicate in Well Boiled Water. Sodium Silicate solution has been known for several centuries. It was used by farmer's wives to cover Eggs in Storage for several months and worked by sealing the Egg Shells making them impervious, isolating the contents of the eggs from air and bacterial
>
> Liquid Sodium Silicate is available in industrial quantities. Tell the manufacturers what you wish to do and ask them to suggest an appropriate Density.
>
> Best regards,
>
> Ivor Lewis.
> Redhill,
> South Australia.
>
Bonnie Staffel on wed 16 nov 05
I have found a sealant that says that it is non-toxic. A Canadian
company manufactures it. It is called WeldBond (one word). I use it to
seal my pit fired pots and they then hold water. If you want to make
sure about the non-toxicity, I would suggest that you check Google for
their address and write to them about your intended use. Remember it is
a Canadian company, not the American Weld Bond material. It is a liquid
that I cut with water to the consistency of skimmed milk. One or two
coats usually suffice and is very inexpensive. I have heard that they
sell this in larger quantities as well.
Warm Regards,
Bonnie Staffel
http://webpages.charter.net/bstaffel/
DVD Throwing with Coils and Slabs
DVD Beginning Processes
Charter Member Potters Council
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