Features and benefits: Pigment-free polypropylene (polycarbonate for Puradisc 30 and Aqua 30. Standard inlet and outlet luer connector. Optional sterile, medical-grade blister pack. Tube-tip format (optional) for accurate dispensing into a micro-vial. Choice of membrane or glass microfiber filter media. Choice of filter sizes (4 mm, 13 mm or 30