I have been ordering replacement WellBlue filters for a number of years and it was my first order from CS Tech and I am happy with my order. I would have given the order 5 stars rather than 4, but thought a little extra packaging/protection, perhaps using bubble wrap other than the bubble bag itself, would be great, although I received 3 filters with no or no damage. The order actually arrived earlier than expected, which improves the ordering process. What I really liked about ordering this time was the letter explaining how to use the filter as well as some bug fixes and an explanation of when the filter seems to be clogged which will answer all the negative reviews I've seen about the jug with WellBlue alkaline filter. . Filters work as described in the letter. The taste of the water is good, but I have never tested the pH of the water and one day I will. I am currently very satisfied with the product!
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