Whatman Grade No. 1 Filter Paper Whatman. 1 Filter Paper 1001-240 is the finest-quality unbleached cellulose paper obtainable. Whatman Grade No. 1 Filter Paper comes in a range of weights and grades and is highly fluid and unaffected by virtually all liquids and gases. Whatman Grade No. 1 Filter Paper comes in a wide variety of base sizes to accommodate the need for paper of almost every weight and size. Whatman Grade No. 1 Filter Papers are highly polished to provide maximum flow-through and require the utmost care in the application. Grade No. 1 with consistent quality and size has precision filtration dimensions which make the paper absolutely pure and almost without recognizable pattern. Specifications for Whatman Grade No. 1 Filter Paper Whatman 1001-240 : Size cm: 24.0 dia. Whatman No.: 1001-240 Unit: Pack of 100 Porosity: Medium Flow Rate: Medium Particle Retention: 11 m (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 Grade No. 1 Filter Paper Whatman 1001-240/ 28450-182 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 Grade No. 1 Filter Paper Whatman 1001-240