It is a Originalateil what fits accordingly and immediately works. I'm still not sure if you can not do without it, just as we take water out of the bottle. However, the test strips showed that the water from the bottle is also very hard .... That being said, I find the article very overpriced and still looking for an alternative. Also I will someday cut to look the filter me the inner workings and whether / what is there actually does.
