Whatman Filter Paper Grade 3 4.25cm No of Paper 100 in box | eBay
1444-070 Whatman 1444-070 Quantitative, Ashless High-quality cotton linters Filter Paper 3 µm, 70 mm (100/Pack) New Laboratory Setup Savings - up to 40%, Magnetic Stirrer, Vortex Mixer, Sample Prep, Centrifuge
Whatman® qualitative filter paper, Grade 3 circles, diam. 185 mm, pack of 100 | Sigma-Aldrich