I bought these as a cheaper replacement for Campbell 1SS-30 5 micron sediment cartridges as advertised. They are about 1/4 inch too long, just enough that they don't tighten or close properly. In addition, they have a very strong chemical odor that does not go away after being removed from the packaging. I strongly advise against the purchase and will stay with the Campbell brand cartridges from now on.
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