Whatman PolyVENT Vessel Venting Filters Whatman Polyvent. Combining top-notch and uncompromising quality with an affordable price the Whatman PolyVENT Vessel Venting Filters Whatman Polyvent 4 6713-0425/ 28137-650 can fulfill your laboratory needs while still offering a great value for the money. Product Category Description: These lightweight venting filters are constructed from a single standardized set of materials (polypropylene & PTFE). Ideal for both small laboratory scale to large process size vessels. Filters allow only sterile microfiltered air to replace the liquid drawn off for use. Pressure within a sealed vessel is equalized with external atmospheric pressure and reaction gases are safely vented off without contaminating either the environment or the tank contents. Filters are autoclavable biosafe and have a hydrophobic 0.2 m PTFE membrane. Specifications for Whatman PolyVENT Vessel Venting Filters Whatman 6713-0425 Polyvent 4: Description: PolyVENT 4 Connection: Male/Female 3 mm (1/8") FiltrationArea cm2: 4 Air Flow Rate at1 bar (14.5 psi) SLPM: 10 Whatman No.: 6713-0425 Unit: Pack of 50 (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Whatman products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Filters with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Whatman Filters. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the Whatman PolyVENT Vessel Venting Filters Whatman Polyvent 4 6713-0425/ 28137-650 we carry a full complement of Filters as well as other product offerings from Whatman. We also carry a full line of Whatman accessories to help meet your laboratory and scientific needs. For a complete selection of Whatman Filters please visit our Whatman page. For more brand name Filters please visit our Filters store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. Whatman PolyVENT Vessel Venting Filters Whatman 6713-0425 Polyvent