Kent super star 7 L RO purifire is not good . I am really much dissapointed from kent purifire. I have purchased kent purifire for pure water. But it was not good. As I experienced from two three months. When it purifies water after that it pipe get white. And I always used one mug for taking out water from it. The mug become white from bottom. The bottom have thick layer of white particles. I always assume it . So I recommend u to please don’t buy it.