PURICUP / water purifier

'puricup' is water furifier. but you can use it just like a cup.(easy & compact) same size! same way! it's good for who doesn't have a much money to buy a mineral water or expensive water purifier.(simple & cheap) For example, african who drink polluted water. Just pun the 'puricup' in a cup! Scoop water with the cup and drink! If color of indicator change to white from blue, you have to replace it for perfect working.