I used the Ceramet filtration before, and was satisfied with it. The older cartridges were discontinued, however, so I had to discard the old showerhead and ordered this new model, which I received promptly. Sadly, the product did not appear to be ‘sealed’ in any way: it just came out of the envelope, admittedly looking new (and hopefully unused). Seems to work well, and I welcome the idea of replacing only the filtration medium, however the presentation | packaging certainly needs improvement.