A homemade, three-pitcher filter unit, one of the simplest and most inexpensive
ways treat drinking water. The first pitcher contains coarse sand. The second
contains wood charcoal and fine sand, and the third collects the filtered water.
Each kalshi has certain media and function:
- Top kalshi - coarse sand.
- Middle kalshi - 2 kg fine sand and 1 kg of wood charcoal
- Bottom kalshi - collection container
A sari cloth… Continue
Posted on April 26, 2010 at 12:35pm