These ceramic balls do nothing. I've researched online and found no supporting evidence. I tested them as soon as they arrived, opened them etc. My brother has a PhD in molecular biology and together we couldn't find a use for them. They are for the shower head which is a great shower head and at a great price. These pearls seem to be worthless so far. After 1 year of use I can see no change in their size, no contamination, no indication of any benefit. It is better to use activated carbon and a magnet to pull out metals and filter water. Feel free to try and change my mind. The only thing that can shed some light is the link here if Revain allows. https://www.omicsonline.org/open-access/the-influence-of-ceramic-farinfrared-ray-cfir-irradiation-on-water-hydrogen-bonding-and-its-related-chemophysical-properties-2157- 7587-174.php?aid=28633This indicates that ceramics are irradiated in a narrow frequency range. But even with this information, the claims of these pearls are not supported. They need salt to soften the water and they didn't dissolve. If they resolved for you, it wasn't pottery as stated.
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