What is the essential difference between g3 primary effect air filter and g4 efficiency?

In the purification system filter is essential, the initial effect air filter as a pre-filter plays an important role, recently many customers visit the consultation when asked g3 initial effect air filter and G4 efficiency what is the difference? Specific air filter manufacturers for your detailed explanation:

g3 primary air filter

In fact, G3 initial effect air filter G4 is the European standard for the initial effect filter (also known as coarse effect filter) in the classification of two, the European standard will be the initial effect filter is divided into G1, G2, G3, G4, remove more than 5μm of particles, efficiency of 15%-80%, of which, G3 particle size efficiency ≥5.0μm, filtration efficiency is between 50% and 70%, G4 particle size efficiency ≥5.0μm, the filtration efficiency is between 70% and 80%, because the efficiency of G4 filter cotton is higher than that of G3 filter cotton, so we will choose G4 filter cotton as the G3 pre efficiency air filter. (Shanghai SFFILTECH G3 G4 Primary Air Filter Factory)

G4 filter cotton is often non-woven fabric, glass fiber and other filter material, after pleating and fixing, making air duct to increase the filtration area, the frame is commonly used from an economic point of view, the initial effect filter is often used as a central air conditioning and central ventilation system pre-filtration, clean return air system, large air compressor pre-filtration of local high-efficiency filtration device, taking into account the large air volume and stability, It can also be used to clamp or increase the dragon skeleton support, and with a metal frame, to make a special filter equipment of plate structure. (Shanghai SFFILTECH G3 G4 Primary Air Filter Factory)

g3 primary air filter

Air filters are recognized by more and more people, it improves air quality and ensures people’s health, and has been widely used, such as medicine, food and other industries are inseparable from all kinds of efficiency filters. (Shanghai SFFILTECH G3 G4 Primary Air Filter Factory)