While the original one dries for a day, we'll use this one as a replacement. Although it is not stated on the market, a popular online retailer's instructions for a similar Chinese filter state that it needs to be washed once a month and lasts for three months. The original one should also be washed once a month, but the maker claims it lasts for two years. So I'm not sure how warranted these savings are. Time will reveal.
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