Whatman 1004-050 Filter Circles, 50mm Dia, Grade 4, 100/pk (PN:1004-050)

GR 4 5CM 100/PK
Qualitative Filter Papers - Standard Grades Grade 4 circles, 50 mm, 100/pk Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide.

Also, check out the Advantec 49005020 Other Filters PAPER DISK 8MM 1000/PK