50 Pack Syringe Filters Sterile Pes With Glass Fiber Pre-Filters, Hydrophilic SPECIFICATION - Sterile PES membrane diameter: 33mm Membrane, pore size: 0.22um, pack of 10. Evey lab filter is marked with filter membrane and pore size for easy identification. Proved by ISO9001. STERILE SYRINGE FILTERS - Each Syringe filter is sterilized and individually packaged with an expiration date for easy use and QC tracking. It is suitable for sterilization of small volume sample and a perfect choice for culture media filtration. HYDROPHILIC PES MEMBRENA - The PES membrane used is naturally hydrophilic and wets out quickly, which provides a superior flow rate and high throughput for ultra-fast filtration of aqueous solutions. HIGH-PERFORMANCE FILTRATION: The PES filters with GF pre-filter have strong dirt-holding capacity to maximize the pre-filtration throughput of particulate-laden samples, increasing liquid filtration flow rates in experiments, and improving filtration efficiency. CONNECTORS - This lab syringe filter is equipped with two connectors: female luer lock connector inlet and male lure slip connector outlet for a better syringe filtration. They can be widely used for ultra-fast filtration of tissue culture medium, sterile filtering protein solution, biological and pharmaceutical sterilization filtration.