[UNIFORM PORE SIZE]PTFE Syringe Filter with uniform pore size, high porosity and high retention efficiency. PTFE Syringe Filter Diameter: 13mm, Pore Size: 0.22m. [HYDROPHOBIC PTFE ]PTFE needle syringe filters have PTFE membrane and natural hydrophobic. It also equips with broad chemical compatibility, strong chemical stability, inertia and hydrophobicity. [ FILTERS]They are easy to put on and take off which are suitable for high heat with high temperature & pressure resistance & gas exchange. [FEATURE]The PTFE syringe filters withstand the autoclave process several times, hydrophobic PTFE membrane with Polypropylene(PP) housing & great sheerness and thickness. [VARIOUS APPLICATION]PTFE Needle Syringe filters are broadly used in filtration of various organic solvents, as well as the filtration of strong acid and strong alkali solutions. They are also suitable for gas filtration/filtering bacteria and other particulate, dyes. Colour:As shown Material:PTFE Package Contents: 100 x Syringe Filter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.