UV filter for drinking water: The lid for a 20 litre steel container is fitted with a UV lamp which can run either on 220V AC or 15V DC from solar power.
How Do We Treat the Poor?
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Uploaded on March 17, 2012
Taken on March 16, 2012
UV filter for drinking water: The lid for a 20 litre steel container is fitted with a UV lamp which can run either on 220V AC or 15V DC from solar power.
How Do We Treat the Poor?
364
views
0
faves
0
comments
Uploaded on March 17, 2012
Taken on March 16, 2012