Unique Model. Great for teaching community Hygeine.
Features:
- Upper vessel of impure water
- Lower vessel of safe drinking water
- Lid
- Ceramic candle
- Colloidal silver impregnated ceramic layer
- Granular activated carbon layer
- Rubber seal
- Nozzle
- Spigot
- Size: 20 x 20 x 42 cm
- 9 parts labelled in total
