| Vigyan Ashram | INDUSA PTI |. In this presentation you will learn: – Water testing for drinking | Vigyan Ashram | INDUSA PTI |

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Presentation transcript:

| Vigyan Ashram | INDUSA PTI |

In this presentation you will learn: – Water testing for drinking | Vigyan Ashram | INDUSA PTI |

To perform water strip test to observe if it is drinkable or not | Vigyan Ashram | INDUSA PTI |

Collecting water sample To understand and observe the change in the colour of water Knowledge of bacteria present in water | Vigyan Ashram | INDUSA PTI |

H2O strip test bottle Water sample | Vigyan Ashram | INDUSA PTI |

Take 100 ml water sample in a sterilised bottle Take sample up to the mark in water strip test bottle Tightly close the bottle and shake slowly so that the reaction between the sample and strip starts Keep the bottle for hours at degree centigrade in a closed room | Vigyan Ashram | INDUSA PTI |

If the water colour becomes black : The water is non-drinkable If the water colour becomes yellow : The water is drinkable | Vigyan Ashram | INDUSA PTI |