The hydrophilic PTFE syringe filter 0.22μm, 0.45μm can instead of PES, N6, PVDF syringe filter, is used for high temperature liquid filtration with excellent biological safety, chemical inertness, low adsorption and high temperature resistance. The pore diameter is 0.22μm/0.45μm, the flux is large, the strength is high, and the high