Feature: 1. High quality raw material:High quality raw material 2. High quality filter element:selection of pure ultra high molecular polyethylene, unique processing technology 3. Super hydrophobicity:the hydrophobic filter element forms a solid barrier to the aerosol, eliminating the risk of cross-contamination between the sample and the pipettor 4. Optimized aperture: to ensure smooth sample absorption 5. Good temperature resistance:-80℃-121℃, no deformation after high temperature and high pressure