Technologies of Liquid filtration industry ranges widely, varying from molecular filtration to conventional particle removal.  Scientists may utilize like: charge effects, osmotic characteristics, surface tension,chemical effects and tec. to achieve the Molecule separations successfully. Conventional filters use the geometric characteristics of particles and screens to avoid enterance of particles but allow the passage of liquids. The intermediate filtration technologies, including nano-filtration (NF), ultra-filtration (UF), and micro-filtration (MF), can rely on combinations of both geometric and thermodynamic mechanisms to achieve the separation.

For example, reverse osmosis membranes are often used to convert seawater and brackish water into potable status. Nano-filters and ultra-filters that remove larger molecular species are popular used to eliminate unwanted constituents from our tap water. Micro-filtration is an increasingly common industrial filtration method for improving chemical and petroleum processes.

As the separated objects become smaller, the capacity of a given unit of filtration area (whether RO, NF, UF, or conventional) usually decreases, and the driving force that effects the separation (generally pressure) increases. These factors have a deep effect on system costs. Thus, people must  select of the filtration type carefully considering its economical result. Liquid filtration product: filter bag is a economical choice for mircon filtration process.