Filter ink is no problem, if you wan✘₽t to completely filter out $₩₩δsaline sodium ions, the effεφ∏ect is not so good. Ul₽♣•δtrafiltration membrane filter d×¥∑¥iameter is 0.01 micron, it can filte★‌←•r out the water and macromol↔♠≈ecules, some mineral ions are ₹♣not filtered out.