the mr. clean in not reverse osmosis... so no..
there is a purifier like a britta type but larger selling at home depot right now.. i think its called zero pure .. but it comes with a free ppm digi stick.. the thing kicks the shit out of my sunleave ec probe.. anyway they are giving the ppm away to prove that their filter reduces all tap to 000... if your scandalous you can easily open the box get the ppm reader,, but who doesnt need a bad ass filter... i think its 70 bucks all together