Ideal for offices and public spaces, this Brio free standing cooler is better equipped, well-thought out, and beautifully designed. With Sediment, Carbon, UF Membrane and Post Carbon filter stages, this cooler provides an endless supply of pure drinking water without the hassles, costs and environmental harms of bottled water. Enjoy bottle water quality with none of the cost and help save the environment with the Brio Premiere CLW3000U Hot and Cold Point of Use Water Cooler. The exterior features a fingerprint-resistant finish that can stand up to any dirty hands. Did we mention it's really easy to clean? This model is ideal to use in any environment whether at home or in the office. Sold with or without a filter, this cooler is fully customizable for our customers needs. Ultrafiltration (UF) is a separation process using membranes with pore sizes in the range of 0.1 to 0.001 micron. Typically, UF membranes will remove high molecular-weight substances, colloidal materials, and organic and inorganic polymeric molecules. Low molecular-weight organics and ions such as sodium, calcium, magnesium chloride, and sulfate are not removed by UF Membranes..