... and most (but not all) inorganic contaminants.Reverse osmosis successfully treats water with dissolved minerals and metals such as ... as benzene, MTBE, trichloroethylene, trihalomethanes, and radon. Essentially, reverse osmosis is capable of rejecting bacteria, salts, sugars, proteins, particles ... 150-250 daltons. The separation of ions with reverse osmosis is aided by charged particles. This means ...