Whatman 1440-125 Filter Circles, 125mm Dia, Ashless Grade 40, 100/pk (PN:1440-125)

GR 40 12.5CM 100/PK
Quantitative Filter Papers - Ashless Grade 40 circles, 125 mm, 100/pk The classic general purpose ashless filter paper with medium speed and retention.

Also, check out the Ahlstrom 0540-1850 Quantitative Filter Paper, Grade 54, 185 mm