How to choose liquid filter bag?
First of all, we need to understand the filtration mechanism of the bag filter system: the liquid flows from the filter bag to the bag, and the filtered particles are trapped in the bag. The filter operation is based on the pressure filtration. Bag filter system mainly includes three parts: filtering container, support basket and filter bag.1, filter bag material selection:First of all according to the fluid to be filtered chemical name, chemical incompatibility to find available for the filter, filter medium temperature, pressure, pH, viscosity (CPS), such as the type of impurities (soft hard particles particles), impurity content (PPM) and operating conditions (e.g., whether it is necessary to withstand steam. Hot water or chemical sterilization), one by one assessment, and remove the filter does not apply. Use is also an important factor to consider, such as medicine, food or cosmetic use of filter material must be granted by the FDA material; ultra pure water must be purified, without releasing material which may impact the impedance of the filter; filtration gas must be hydrophobic material as well as the need for hygiene filtration design etc..
2, filter bag precision choice:This is one of the most puzzling problems. For example, to remove the visible particles, used to filter 20 or 25 microns; to remove the liquid cloud form, to select 1 or 5 micron filter to filter out bacteria; minimum 0.2 micron filter is required. The problem is that there are two types of filtering accuracy units: absolute accuracy / nominal accuracy.
