Dec 21, 2021 · 5190-5267 - Econofilter,PTFE Membrane, 1,000/PK. Be the first to review this product. $643.00. SKU: 5190-5267. Overview. Specifications. Captiva Econofilter, polypropylene housing, PTFE membrane, 25 mm diameter, 0.2 µm pore size, 1000/pk. Aijiren high quality syringe filters that provide efficient filtration at a reasonable price.