Ge Bio-Sciences Cellulose Filter Papers Pack 1001-032 by GE Healthcare Bio-Sciences GROUP: Lab Equipment & Accessories:Filter Papers & Membranes:Cellulose Filters Item Description: Filter Circles, 32mm Dia, Grade 1, 100/pk Packaging Desc: Paper Filter 32Mm Dia Circlestd Grade 1 100/Pack Country of Origin: GB Harmonized Tariff Code: 4823.20.00 Product Description: Whatman filter papers are world-renowned as the standard for laboratory filtration and are associated with quality, reliability and customer service. Manufactured from high-quality cotton linters, which have been treated to achieve a minimum alpha cellulose contact of 98%. Used for general filtration and exhibit particle retention levels down to 2.5 �m. Used in qualitative analytical techniques to determine and identify materials. Offers a wide choice of retention/flow rate combinations to suit numerous laboratory applications. The different groups of cellulose filters offer increasing degrees of purity, hardness and chemical resistance. Prepleated filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.