My work involves carbon purification of solvents which requires activated carbon that can be sieved with an 8 x 30 mesh. At 120 this screens nicely. Solvent flows through, but the carbon stays where in the filter where it's supposed to. So far the stainless steel lives up to its advertisement. There has been no evidence of rust.The prices is fair for what you get. All in all I am very happy with it.
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