Whatman membrane filters nylon pore size 0.2 um, diam. 47 mm- pkg of 100 ea Whatman filter
Cellulose Nitrate Filter Paper 0.45 micron dia 47mm pack of 100 suitable for millipore membrane filter set AC-607M4547 AC-2270m | Chemistry Bio Chemistry | Abronexport.com
MFNY047045 Nylon Membrane Filter, Diameter 47 mm, Pore Size 0.45 µm, N – Distribution LabSphere inc.