Features 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 mm 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 100 per packSpecifications Size: 110 mm dia. Grade: Grade 989 Weight: 0.24 lbs - SKU: MDP12110