Having previously used Camelot and Olympus filters, I decided to go for something more economical. I don't know if it actually purifies the water, but the taste is awful. The filter is 0.5 microns. I contacted the store where I bought it and they told me to wait a few days and call them again if the problem persists.

The price-performance ratio is very satisfactory. The water comes out as it should, in terms of taste or rather lack of taste, and in terms of flow. I haven't made any measurements or looked into it that much. However, my instinct is satisfied