There are several common terms in the purification system flow of pure water machine, namely PF (pre-filtration), AC (activated carbon), RO (reverse osmosis), UV (ultraviolet sterilization/digestion), UF (ultrafiltration). The details are as follows. (1) Pre-filtration (PF): Try to remove impurities that have an effect on the reverse osmosis membrane, mainly referring to large particulate matter. (2) Activated carbon (AC): Activated carbon adsorption method that removes nonionic organic matter by the pore size of the activated carbon filter and the permeation of organic matter through the pores. (3) Reverse osmosis (RO): Reverse osmosis is the separation of a solvent (usually referred to as water) in a solution through a reverse osmosis membrane (a semipermeable membrane) with sufficient pressure. The main separation object of the reverse osmosis membrane is the range of ions in the solution. The reverse osmosis (RO) process is the most economical method for achieving 90%-99% impurity removal rates and is typically used to filter contaminants other than 1 nm in diameter. (4) Ion exchange (DI): The ion exchange method is to filter the raw water by a spherical resin (ion exchange resin). The ions in the water are exchanged with the ions fixed on the resin. The two common ion exchange methods are hard water. Softening and deionization. (5) Ultrafiltration (UF): The microporous membrane removes particles according to its pore size, while the ultrafiltration (UF) membrane is a molecular sieve that is based on size and allows the solution to pass through a very fine membrane to achieve The purpose of separating molecules of different sizes in solution. Ultrafiltration membranes are tough, thin, and selective membranes that trap most molecules of a certain size, including: gums, microbes, and heat. Smaller molecules. China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.apipepdites.com