Luknova Patented Easyfil Filter. 20Ml Volume, 24/25 Joint Adaptor To Fit Standard Flask And Side-Arm To Connect Vacumm, Empty, Column Shape, Polyethylene Frit Pore Size 10µm. This Unit Comes At 25 Filters Per Pack. Frit, Adaptor, And Funnel Body Were Integrated Via Welded Seals As One-Piece Leak-Free Filter. Polypropylene Structure Resistant To Common Aqueous And Organic Solvents Like Ethyl Acetate , Dimethylformamide (Dmf), Dimethylamine (Dma), Diethyl Ether (Dme), Dichloromethane (Dcm), Tetrahydrofuran (Thf), Hexane, Concentrated Sulfuric Acid (H2So4), Hydrochloric Acid (Hcl), Hydrobromic Acid (Hbr), Hydrogen Iodide (Hi), Acetic Acid, Trifluoroacetic Acid (Tfa), Saturated Naoh And Koh Solution, And Even Dimethyl Sulfoxide (Dmso) At Temperature ≤120C (248F). Safe And Ready To Use For Faster Filtration Without Contamination, Save Time And Solvent, Low-Cost Disposable And Resuable Up To 20 Times. Welded Seals Eliminating Bypass Leakage And Long-Stem Minimizing Foaming, Splashing.