Whatman 1004-320 Filter Circles, 320mm Dia, Grade 4, 100/pk (PN:1004-320)

GR 4 32CM 100/PKQualitative Filter Papers – Standard Grades Grade 4 circles, 320 mm, 100/pk Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide.