Glass fiber filter, grade GD-120, 110mm Ø, 123g/m², 0.51mm thick, pore size 0.9µm. No binder, max. temp. 500 °C. Prefilter for membrane filters with pore size 0.45 to 1.2µm. Very high loading
PALL 61652 Type A/E Glass Fiber Disc and Sheet, Autoclavable, 330 μm Thickness, 1 µm Pore Size, 37 mm Diameter: Science Lab Supplies: Amazon.com: Industrial & Scientific
Maine 1215563 PreSep Glass Fiber Filter with G20 Binder, Disk, 1.0µm Pore Size, 75mm Dia, Pack of 25: Science Lab Filter Membranes: Amazon.com: Industrial & Scientific