Whatman® Puradisc 13 syringe filters 0.45 μm, PTFE, 100/pk Synonym (s): Whatman filter, Whatman filters, Z672882, disposable syringe filters NACRES: NB.24 Pricing and availability is not currently available. Properties material PTFE membrane polypropylene housing sterility non-sterile packaging pack of 100 manufacturer/tradename Whatman 6784-1304