Filtration Progression

• June ’08 commenced trials with Noukham.
• March ’09 conducted first water quality test to determine bacteria removal.
• June ’09 Lao Ministry of Health and FAO test laboratories both state that the filter removes adequate levels of E. Coli bacteria.
• January ’10 Ketsasart University test laboratory declares that filter meets MSF field water supply.

Filter shape progression

• June ’08 Commence filter hand production experiments with Noukham, the filters were initially an inverted cone shape with a volume of 600 ml.
• September ’08 Noukham independently discovers that a 50 / 50 ratio of coffee to clay makes the best filter.
• March ’09 We began sourcing our coffee grounds from Jomah Bakery.
• April ’09 Noukham begins scraping the surface of dry filters to increase their flow rate.
• May ’09 Noukham produces a 2 litre filter.
• July ’09 Noukham tests clay sourced from a village in Attapheu. The clay was less suitable because of its poor binding qualities. As a result of this we initiated a moulding trial.
• August ’09 We assist Noukham to produce her first successful filter using the 2.5 litre concrete pressure mould.
• September ’09 Clay pot filter is successfully made from brick clay for the first time.
• February ’09 Noukham fires her first successful candle filter. The candle filter is long and thin and is designed to sit in the inverse position at the base of the collection pot.

First Iteration Clay Pot Water Filter