They were a lot cheaper than Pur filters. I have no idea about their ability to filter out harmful solids. As I have read in other reviews the flow through these filters is much faster. I'm not sure if that's a very good sign, but I'm sure if they didn't do anything they wouldn't be in the market. The other reason I'm buying them is to kick out the Pur bird for raising its prices to ridiculous levels, not to mention it only comes with 5 filters. For real?
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