Simsii Sterile Syringe Filters, CA Micron Filter, Diameter 25mm, Pore Size 0.22um, Pack of 50: Amazon.com: Industrial & Scientific
Hydrophilic PTFE 0.22um Syringe Filters 13mm/25mm for Chemical Solution Filtration - China Pes Syringe Filters, Mce Syringe Filters | Made-in-China.com