He works with volunteers to produce the water purifiers.

他与志愿者一起生产水净化装置。

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Methods the bacterial removal effectiveness of 7 types of commercially available water purifiers was tested using the National Standard Methods.

方法按照国家标准方法检测了7类市售净水器对细菌的去除功能。

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Gratzel also said that the cells could be used to power fridges, to preserve food and pharmaceuticals, and to drive ozone-generating water purifiers.

gratzel表示该电池还可以用于给保存食品和药物的冰箱供电，并可以驱动臭氧净水器。

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He works with volunteers to produce the water purifiers.

VOA: special.2009.06.22

The company is already working with two foreign companies to innovate in water purifiers.

FORBES: Magazine Article

"With our product, we are hoping to target nonusers and those who couldn't afford water purifiers due to affordability reasons and lack of awareness, " said Mr. Hiran.

WSJ: Tata Markets Inexpensive Water Filter

Initially developed for the distribution of cook stoves, it has expanded to a more complete basket of products including eyeglasses, vegetable seeds, solar lights and water purifiers.

FORBES: Social Entrepreneurship: The MicroConsignment Model