Econofilter PTFE 13mm diameter 0.45um pore size 1000/pk quantity. Add to Quote. Add To Quote. Click here to view Items in your quote cart. Part Code: AGI5190-5266 Categories: Aijiren Technologies, Sample Preparation & Filtration. Description. Captiva Econofilter, PTFE membrane, 13 mm diameter, 0.45 µm pore, 1000/pk. Additional information.