Translations:Water - Biosand Filter/32/en

Plastic tubes (polyethylene or vinyl) 6mm (1/4") ID and 9mm (3/8") OD
Sturdy tape
Oil (food grade)
Brush or cloth to apply the oil
12 liters of cement
24 liters of 1mm (0.04") sand
12 liters of 12mm (1/2 ) gravel
12 liters of 6mm (1/4 ) gravel
Water - about 7-10 liters
Soap