The apparatus of Ultrafiltration in a laboratory

Ultrafiltration (UF) is a variety of membrane filtration in which hydrostatic pressure forces a liquid against a semipermeable membrane. A semipermeable membrane, also termed a selectively-permeable membrane, a partially-permeable membrane or a differentially-permeable membrane, is a membrane Suspended solids and solutes of high molecular weight are retained, while water and low molecular weight solutes pass through the membrane. This separation process is used in industry and research for purifying and concentrating macromolecular (10³ - 10⁶ Da) solutions, especially protein solutions. In Chemistry and Chemical engineering, a separation process is used to transform a Mixture of substances into two or more distinct products The unified atomic mass unit ( u) or Dalton ( Da) or sometimes universal mass unit, is an unit of Mass used to express Ultrafiltration is not fundamentally different from reverse osmosis, microfiltration or nanofiltration, except in terms of the size of the molecules it retains. Reverse osmosis (RO is a separation process that uses pressure to force a Solution through a membrane that retains the Solute on one side and allows the Microfiltration is a Filtration process which removes Contaminants from a Fluid (liquid & gas by passage through a microporous membrane. Nanofiltration is a relatively recent membrane process used most often with low Total dissolved solids water such as Surface water and fresh groundwater with the

More specifically, it can refer to:

• Ultrafiltration (industrial)
• Ultrafiltration (renal)
• Aquapheresis