I only got these carbon sticks for the supposed PH balancing effect. I took pH paper and tested the water before inserting the sticks. I then tested the water 2 hours, 12 hours and 24 hours after the sticks were in the water, the pH has not changed. I cannot confirm the chemical cleaning aspect of these sticks as I have not tested them. I only got them to balance the pH of my reverse osmosis water.
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