Reverse Osmosis Water Purifier from Blueair. Direct Flow effectively removes pollutants such as microorganisms, pesticides, heavy metals and toxins. What remains is what you want - cool, safe and truly pure water. Direct Flow uniquely combines large capacity and high efficiency with an attractive and compact design to fit all modern homes. And unlike other reverse osmosis systems, Direct Flow makes efficient use of inlet water. Blueair's performance is proven effective, and we provide information with integrity so consumers can make informed choices. Today Blueair's headquarters are in Stockholm, Sweden, and Chicago, Illinois, two places known for their commitment to a healthy environment.